diff --git a/include/SFML/Graphics/RenderWindow.hpp b/include/SFML/Graphics/RenderWindow.hpp
index 399b40f0..35f565f6 100644
--- a/include/SFML/Graphics/RenderWindow.hpp
+++ b/include/SFML/Graphics/RenderWindow.hpp
@@ -73,7 +73,7 @@ public :
     /// \param settings Additional settings for the underlying OpenGL context
     ///
     ////////////////////////////////////////////////////////////
-    RenderWindow(VideoMode mode, const std::string& title, Uint32 style = Style::Default, const ContextSettings& settings = ContextSettings());
+    RenderWindow(VideoMode mode, const String& title, Uint32 style = Style::Default, const ContextSettings& settings = ContextSettings());
 
     ////////////////////////////////////////////////////////////
     /// \brief Construct the window from an existing control
diff --git a/include/SFML/Window/Window.hpp b/include/SFML/Window/Window.hpp
index d4b91e3f..5e5e613a 100644
--- a/include/SFML/Window/Window.hpp
+++ b/include/SFML/Window/Window.hpp
@@ -37,7 +37,7 @@
 #include <SFML/System/Clock.hpp>
 #include <SFML/System/Vector2.hpp>
 #include <SFML/System/NonCopyable.hpp>
-#include <string>
+#include <SFML/System/String.hpp>
 
 
 namespace sf
@@ -86,7 +86,7 @@ public :
     /// \param settings Additional settings for the underlying OpenGL context
     ///
     ////////////////////////////////////////////////////////////
-    Window(VideoMode mode, const std::string& title, Uint32 style = Style::Default, const ContextSettings& settings = ContextSettings());
+    Window(VideoMode mode, const String& title, Uint32 style = Style::Default, const ContextSettings& settings = ContextSettings());
 
     ////////////////////////////////////////////////////////////
     /// \brief Construct the window from an existing control
@@ -125,7 +125,7 @@ public :
     /// \param settings Additional settings for the underlying OpenGL context
     ///
     ////////////////////////////////////////////////////////////
-    void create(VideoMode mode, const std::string& title, Uint32 style = Style::Default, const ContextSettings& settings = ContextSettings());
+    void create(VideoMode mode, const String& title, Uint32 style = Style::Default, const ContextSettings& settings = ContextSettings());
 
     ////////////////////////////////////////////////////////////
     /// \brief Create (or recreate) the window from an existing control
@@ -284,7 +284,7 @@ public :
     /// \see setIcon
     ///
     ////////////////////////////////////////////////////////////
-    void setTitle(const std::string& title);
+    void setTitle(const String& title);
 
     ////////////////////////////////////////////////////////////
     /// \brief Change the window's icon
diff --git a/src/SFML/Graphics/RenderWindow.cpp b/src/SFML/Graphics/RenderWindow.cpp
index d1843f10..23404405 100644
--- a/src/SFML/Graphics/RenderWindow.cpp
+++ b/src/SFML/Graphics/RenderWindow.cpp
@@ -39,7 +39,7 @@ RenderWindow::RenderWindow()
 
 
 ////////////////////////////////////////////////////////////
-RenderWindow::RenderWindow(VideoMode mode, const std::string& title, Uint32 style, const ContextSettings& settings)
+RenderWindow::RenderWindow(VideoMode mode, const String& title, Uint32 style, const ContextSettings& settings)
 {
     // Don't call the base class constructor because it contains virtual function calls
     create(mode, title, style, settings);
diff --git a/src/SFML/Window/Linux/WindowImplX11.cpp b/src/SFML/Window/Linux/WindowImplX11.cpp
index d3b8642f..f2f8ec40 100644
--- a/src/SFML/Window/Linux/WindowImplX11.cpp
+++ b/src/SFML/Window/Linux/WindowImplX11.cpp
@@ -35,6 +35,8 @@
 #include <X11/extensions/Xrandr.h>
 #include <sstream>
 #include <vector>
+#include <string>
+#include <iterator>
 
 
 ////////////////////////////////////////////////////////////
@@ -91,7 +93,7 @@ m_keyRepeat   (true)
 
 
 ////////////////////////////////////////////////////////////
-WindowImplX11::WindowImplX11(VideoMode mode, const std::string& title, unsigned long style) :
+WindowImplX11::WindowImplX11(VideoMode mode, const String& title, unsigned long style) :
 m_window      (0),
 m_inputMethod (NULL),
 m_inputContext(NULL),
@@ -313,9 +315,23 @@ void WindowImplX11::setSize(const Vector2u& size)
 
 
 ////////////////////////////////////////////////////////////
-void WindowImplX11::setTitle(const std::string& title)
+void WindowImplX11::setTitle(const String& title)
 {
-    XStoreName(m_display, m_window, title.c_str());
+    // Bare X11 has no Unicode window title support.
+    // There is however an option to tell the window manager your unicode title via hints.
+    
+    // Convert to UTF-8 encoding.
+    std::basic_string<sf::Uint8> utf8Title;
+    sf::Utf32::toUtf8(title.begin(), title.end(), std::back_inserter(utf8Title));
+    
+    // Set the _NET_WM_NAME atom, which specifies a UTF-8 encoded window title.
+    Atom wmName = XInternAtom(m_display, "_NET_WM_NAME", False);
+    Atom useUtf8 = XInternAtom(m_display, "UTF8_STRING", False);
+    XChangeProperty(m_display, m_window, wmName, useUtf8, 8,
+                    PropModeReplace, utf8Title.c_str(), utf8Title.size());
+    
+    // Set the non-Unicode title as a fallback for window managers who don't support _NET_WM_NAME.
+    XStoreName(m_display, m_window, title.toAnsiString().c_str());
 }
 
 
diff --git a/src/SFML/Window/Linux/WindowImplX11.hpp b/src/SFML/Window/Linux/WindowImplX11.hpp
index 11c7e6ef..74392ba7 100644
--- a/src/SFML/Window/Linux/WindowImplX11.hpp
+++ b/src/SFML/Window/Linux/WindowImplX11.hpp
@@ -30,9 +30,9 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/Event.hpp>
 #include <SFML/Window/WindowImpl.hpp>
+#include <SFML/System/String.hpp>
 #include <X11/Xlib.h>
 #include <set>
-#include <string>
 
 
 namespace sf
@@ -63,7 +63,7 @@ public :
     /// \param style Window style (resizable, fixed, or fullscren)
     ///
     ////////////////////////////////////////////////////////////
-    WindowImplX11(VideoMode mode, const std::string& title, unsigned long style);
+    WindowImplX11(VideoMode mode, const String& title, unsigned long style);
 
     ////////////////////////////////////////////////////////////
     /// \brief Destructor
@@ -117,7 +117,7 @@ public :
     /// \param title New title
     ///
     ////////////////////////////////////////////////////////////
-    virtual void setTitle(const std::string& title);
+    virtual void setTitle(const String& title);
 
     ////////////////////////////////////////////////////////////
     /// \brief Change the window's icon
diff --git a/src/SFML/Window/OSX/WindowImplCocoa.hpp b/src/SFML/Window/OSX/WindowImplCocoa.hpp
index 40b18dc0..e1866556 100644
--- a/src/SFML/Window/OSX/WindowImplCocoa.hpp
+++ b/src/SFML/Window/OSX/WindowImplCocoa.hpp
@@ -31,6 +31,7 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/Event.hpp>
 #include <SFML/Window/WindowImpl.hpp>
+#include <SFML/System/String.hpp>
 
 ////////////////////////////////////////////////////////////
 /// Predefine OBJC classes
@@ -79,7 +80,7 @@ public :
     /// \param style Window style (resizable, fixed, or fullscren)
     ///
     ////////////////////////////////////////////////////////////
-    WindowImplCocoa(VideoMode mode, const std::string& title, unsigned long style);
+    WindowImplCocoa(VideoMode mode, const String& title, unsigned long style);
     
     ////////////////////////////////////////////////////////////
     /// \brief Destructor
@@ -280,7 +281,7 @@ public :
     /// \param title New title
     ///
     ////////////////////////////////////////////////////////////
-    virtual void setTitle(const std::string& title);
+    virtual void setTitle(const String& title);
 
     ////////////////////////////////////////////////////////////
     /// \brief Change the window's icon
diff --git a/src/SFML/Window/OSX/WindowImplCocoa.mm b/src/SFML/Window/OSX/WindowImplCocoa.mm
index 687f5b78..210daf52 100644
--- a/src/SFML/Window/OSX/WindowImplCocoa.mm
+++ b/src/SFML/Window/OSX/WindowImplCocoa.mm
@@ -28,6 +28,7 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/OSX/WindowImplCocoa.hpp>
 #include <SFML/System/Err.hpp>
+#include <SFML/System/String.hpp>
 
 #import <SFML/Window/OSX/SFWindowController.h>
 #import <SFML/Window/OSX/SFViewController.h>
@@ -80,7 +81,7 @@ WindowImplCocoa::WindowImplCocoa(WindowHandle handle)
     
 ////////////////////////////////////////////////////////////
 WindowImplCocoa::WindowImplCocoa(VideoMode mode, 
-                                 const std::string& title, 
+                                 const String& title, 
                                  unsigned long style)
 : m_showCursor(true)
 {
@@ -91,7 +92,7 @@ WindowImplCocoa::WindowImplCocoa(VideoMode mode,
     retainPool();
     
     m_delegate = [[SFWindowController alloc] initWithMode:mode andStyle:style];
-    [m_delegate changeTitle:stringToNSString(title)];
+    [m_delegate changeTitle:sfStringToNSString(title)];
     [m_delegate setRequesterTo:this];
 }
 
@@ -362,9 +363,9 @@ void WindowImplCocoa::setSize(const Vector2u& size)
 
     
 ////////////////////////////////////////////////////////////
-void WindowImplCocoa::setTitle(const std::string& title)
+void WindowImplCocoa::setTitle(const String& title)
 {
-    [m_delegate changeTitle:stringToNSString(title)];
+    [m_delegate changeTitle:sfStringToNSString(title)];
 }
 
     
diff --git a/src/SFML/Window/OSX/cpp_objc_conversion.h b/src/SFML/Window/OSX/cpp_objc_conversion.h
index 73b42aca..75095b35 100644
--- a/src/SFML/Window/OSX/cpp_objc_conversion.h
+++ b/src/SFML/Window/OSX/cpp_objc_conversion.h
@@ -27,6 +27,7 @@
 // Headers
 ////////////////////////////////////////////////////////////
 #include <string>
+#include <SFML/System/String.hpp>
 
 #import <Foundation/Foundation.h>
 
@@ -35,4 +36,4 @@
 ///
 ////////////////////////////////////////////////////////////
 NSString* stringToNSString(std::string const& string);
-
+NSString* sfStringToNSString(sf::String const& string);
diff --git a/src/SFML/Window/OSX/cpp_objc_conversion.mm b/src/SFML/Window/OSX/cpp_objc_conversion.mm
index 91d33aec..4b619a58 100644
--- a/src/SFML/Window/OSX/cpp_objc_conversion.mm
+++ b/src/SFML/Window/OSX/cpp_objc_conversion.mm
@@ -28,6 +28,7 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/System/Utf.hpp>
 
+#import <Foundation/Foundation.h>
 #import <SFML/Window/OSX/cpp_objc_conversion.h>
 
 ////////////////////////////////////////////////////////////
@@ -40,3 +41,18 @@ NSString* stringToNSString(std::string const& string)
     return str;
 }
 
+////////////////////////////////////////////////////////////
+NSString* sfStringToNSString(sf::String const& string)
+{
+    sf::Uint32 length = string.getSize() * sizeof(sf::Uint32);
+    const void* data = reinterpret_cast<const void*>(string.getData());
+
+    NSStringEncoding encoding;
+    if (NSHostByteOrder() == NS_LittleEndian)
+        encoding = NSUTF32LittleEndianStringEncoding;
+    else
+        encoding = NSUTF32BigEndianStringEncoding;
+
+    NSString* str = [[NSString alloc] initWithBytes:data length:length encoding:encoding];
+    return str;
+}
diff --git a/src/SFML/Window/Win32/WindowImplWin32.cpp b/src/SFML/Window/Win32/WindowImplWin32.cpp
index 44b5087c..bf80e8f4 100644
--- a/src/SFML/Window/Win32/WindowImplWin32.cpp
+++ b/src/SFML/Window/Win32/WindowImplWin32.cpp
@@ -37,6 +37,7 @@
 #include <SFML/Window/WindowStyle.hpp>
 #include <GL/gl.h>
 #include <SFML/System/Err.hpp>
+#include <SFML/System/Utf.hpp>
 #include <vector>
 
 // MinGW lacks the definition of some Win32 constants
@@ -84,7 +85,7 @@ m_resizing        (false)
 
 
 ////////////////////////////////////////////////////////////
-WindowImplWin32::WindowImplWin32(VideoMode mode, const std::string& title, Uint32 style) :
+WindowImplWin32::WindowImplWin32(VideoMode mode, const String& title, Uint32 style) :
 m_handle          (NULL),
 m_callback        (0),
 m_cursor          (NULL),
@@ -132,14 +133,11 @@ m_resizing        (false)
     // Create the window
     if (hasUnicodeSupport())
     {
-        wchar_t wTitle[256];
-        int count = MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, title.c_str(), static_cast<int>(title.size()), wTitle, sizeof(wTitle) / sizeof(*wTitle));
-        wTitle[count] = L'\0';
-        m_handle = CreateWindowW(classNameW, wTitle, win32Style, left, top, width, height, NULL, NULL, GetModuleHandle(NULL), this);
+        m_handle = CreateWindowW(classNameW, title.toWideString().c_str(), win32Style, left, top, width, height, NULL, NULL, GetModuleHandle(NULL), this);
     }
     else
     {
-        m_handle = CreateWindowA(classNameA, title.c_str(), win32Style, left, top, width, height, NULL, NULL, GetModuleHandle(NULL), this);
+        m_handle = CreateWindowA(classNameA, title.toAnsiString().c_str(), win32Style, left, top, width, height, NULL, NULL, GetModuleHandle(NULL), this);
     }
 
     // Switch to fullscreen if requested
@@ -253,9 +251,16 @@ void WindowImplWin32::setSize(const Vector2u& size)
 
 
 ////////////////////////////////////////////////////////////
-void WindowImplWin32::setTitle(const std::string& title)
+void WindowImplWin32::setTitle(const String& title)
 {
-    SetWindowTextA(m_handle, title.c_str());
+    if (hasUnicodeSupport())
+    {
+        SetWindowTextW(m_handle, title.toWideString().c_str());
+    }
+    else
+    {
+        SetWindowTextA(m_handle, title.toAnsiString().c_str());
+    }
 }
 
 
@@ -877,3 +882,4 @@ LRESULT CALLBACK WindowImplWin32::globalOnEvent(HWND handle, UINT message, WPARA
 } // namespace priv
 
 } // namespace sf
+
diff --git a/src/SFML/Window/Win32/WindowImplWin32.hpp b/src/SFML/Window/Win32/WindowImplWin32.hpp
index 88d1a3ed..ac091e87 100644
--- a/src/SFML/Window/Win32/WindowImplWin32.hpp
+++ b/src/SFML/Window/Win32/WindowImplWin32.hpp
@@ -30,8 +30,8 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/Event.hpp>
 #include <SFML/Window/WindowImpl.hpp>
+#include <SFML/System/String.hpp>
 #include <windows.h>
-#include <string>
 
 
 namespace sf
@@ -62,7 +62,7 @@ public :
     /// \param style Window style
     ///
     ////////////////////////////////////////////////////////////
-    WindowImplWin32(VideoMode mode, const std::string& title, Uint32 style);
+    WindowImplWin32(VideoMode mode, const String& title, Uint32 style);
 
     ////////////////////////////////////////////////////////////
     /// \brief Destructor
@@ -116,7 +116,7 @@ public :
     /// \param title New title
     ///
     ////////////////////////////////////////////////////////////
-    virtual void setTitle(const std::string& title);
+    virtual void setTitle(const String& title);
 
     ////////////////////////////////////////////////////////////
     /// \brief Change the window's icon
diff --git a/src/SFML/Window/Window.cpp b/src/SFML/Window/Window.cpp
index c58f3693..63ffd60d 100644
--- a/src/SFML/Window/Window.cpp
+++ b/src/SFML/Window/Window.cpp
@@ -51,7 +51,7 @@ m_frameTimeLimit(Time::Zero)
 
 
 ////////////////////////////////////////////////////////////
-Window::Window(VideoMode mode, const std::string& title, Uint32 style, const ContextSettings& settings) :
+Window::Window(VideoMode mode, const String& title, Uint32 style, const ContextSettings& settings) :
 m_impl          (NULL),
 m_context       (NULL),
 m_frameTimeLimit(Time::Zero)
@@ -78,7 +78,7 @@ Window::~Window()
 
 
 ////////////////////////////////////////////////////////////
-void Window::create(VideoMode mode, const std::string& title, Uint32 style, const ContextSettings& settings)
+void Window::create(VideoMode mode, const String& title, Uint32 style, const ContextSettings& settings)
 {
     // Destroy the previous window implementation
     close();
@@ -236,7 +236,7 @@ void Window::setSize(const Vector2u size)
 
 
 ////////////////////////////////////////////////////////////
-void Window::setTitle(const std::string& title)
+void Window::setTitle(const String& title)
 {
     if (m_impl)
         m_impl->setTitle(title);
diff --git a/src/SFML/Window/WindowImpl.cpp b/src/SFML/Window/WindowImpl.cpp
index 2e3d5ac3..8fd0d92d 100644
--- a/src/SFML/Window/WindowImpl.cpp
+++ b/src/SFML/Window/WindowImpl.cpp
@@ -55,7 +55,7 @@ namespace sf
 namespace priv
 {
 ////////////////////////////////////////////////////////////
-WindowImpl* WindowImpl::create(VideoMode mode, const std::string& title, Uint32 style)
+WindowImpl* WindowImpl::create(VideoMode mode, const String& title, Uint32 style)
 {
     return new WindowImplType(mode, title, style);
 }
diff --git a/src/SFML/Window/WindowImpl.hpp b/src/SFML/Window/WindowImpl.hpp
index d60960f3..ff57cfd1 100644
--- a/src/SFML/Window/WindowImpl.hpp
+++ b/src/SFML/Window/WindowImpl.hpp
@@ -30,6 +30,7 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Config.hpp>
 #include <SFML/System/NonCopyable.hpp>
+#include <SFML/System/String.hpp>
 #include <SFML/Window/Event.hpp>
 #include <SFML/Window/Joystick.hpp>
 #include <SFML/Window/JoystickImpl.hpp>
@@ -37,8 +38,6 @@
 #include <SFML/Window/WindowHandle.hpp>
 #include <queue>
 #include <set>
-#include <string>
-
 
 namespace sf
 {
@@ -64,7 +63,7 @@ public :
     /// \return Pointer to the created window (don't forget to delete it)
     ///
     ////////////////////////////////////////////////////////////
-    static WindowImpl* create(VideoMode mode, const std::string& title, Uint32 style);
+    static WindowImpl* create(VideoMode mode, const String& title, Uint32 style);
 
     ////////////////////////////////////////////////////////////
     /// \brief Create a new window depending on to the current OS
@@ -155,7 +154,7 @@ public :
     /// \param title New title
     ///
     ////////////////////////////////////////////////////////////
-    virtual void setTitle(const std::string& title) = 0;
+    virtual void setTitle(const String& title) = 0;
 
     ////////////////////////////////////////////////////////////
     /// \brief Change the window's icon