Does Qt support ribbon control?

While there is no dedicated Ribbon widget in Qt, you can fashion something similar yourself. You could take a QTabWidget and put some buttons inside (and optionally style it to look a bit more like Microsoft's Ribbon). Depending on what you're trying to accomplish, that might suffice.

I want to share with you the link to site has published screenshots of their component Qtitan Ribbon for Qt. http://www.devmachines.com/qtitanribbon-overview.html