举手击掌（High-Five），是美国文化手势的一种一般代表了「庆祝成功的击掌」有时也写成「Give me five」。这个手势用于两人之间，动作是两人各高举一只手，并向对方的手拍击。1977年，美国棒球队员格兰·伯奇Glenn Burke和达斯基·贝克Dusty Baker是最典型的代表，他们经常在洛杉矶的道奇球场上做出这个手势，可确定的是，这是棒球场上第一个使用High-five的例子。当时伯奇经常使用这个手势「预告」贝克会赢。

在孩童的游戏中，举手击掌的手势搭配着有押韵的歌谣：「up high, to the side, to the other side, down low, too slow!」当念到too slow时，手就要快速放下让对方击不到掌。

The high five is a hand gesture that occurs when two people simultaneously raise one hand each, about head-high, and push, slide, or slap the flat of their palm against the flat palm of the other person. The gesture is often preceded verbally by a phrase like "Give me five" or "High five." Its meaning varies with the context of use but can include as a greeting, congratulations or celebration.