Windows键，简称“Winkey”或“Win键”，是在计算机键盘左下角Ctrl和Alt键之间的按键，图案是Microsoft Windows的视窗徽标。现在大多数运行Windows的PC键盘上都有这个按键。在Linux下称为Super键，功能与Windows不一样。在Mac中，该位置有三个键，分别为Control，Option（Alt），Command键。其中Command键代替了Windows键，但在OS X中，此键功能类似于Windows中的Ctrl，而在运行Windows的Mac中，此键功能与Windows键完全相同。

Windows logo key (also known as Windows key, start key, logo key, flag key, super key, command key or flag, home) is a keyboard key which was originally introduced on the Microsoft Natural keyboard in 1994. This key became a standard key on PC keyboards. Tapping this key invokes the operating system's start menu, if it has one. In Windows, Ctrl+Esc performs the same function, in case the keyboard lacks this key.