谢赫（阿拉伯语：شيخ；索马里语：Sheekh），阿拉伯语中的一个常见尊称，意指“部落长老”、“伊斯兰教教长”、“智能的男子”等（通常是指超过40岁博学的人）。在阿拉伯半岛，谢赫是部落首领的头衔之一。在南亚（孟加拉国、巴基斯坦、阿富汗、印度）和东南亚，谢赫往往是阿拉伯后裔男子的称号；阿拉伯基督教徒也常用该尊称。这个词汇的其他译名有沙伊赫、昔、锡。

在印度，一些高种姓（婆罗门，刹帝利），如皈依伊斯兰教也会使用此头衔，在德里地区谢赫通常是波斯移民后代。

Sheikh (pronounced /ˈʃeɪk/ SHAYK or /ˈʃiːk/ SHEEK; Arabic:شيخ‎ šayḫ [ʃæjx], mostly pronounced [ʃeːx], plural شيوخ šuyūḫ [ʃuju:x])—also transliterated Sheik, Shaik, Shayk, Shaykh, Shaikh, Cheikh, and Shekh— is an honorific title in the Arabic language. It commonly designates the ruler of a tribe, who inherited the title from his father. "Sheikh" is given to a royal male at birth, whereas the related title "Sheikha" is given to a royal female at birth. "Sheikh" also often serves as a title for prominent Islamic leaders or clerics.