中南半岛（英语：Indochina 或Indo-China，音译印度**），或称印支半岛、中印半岛，指亚洲东南部的半岛，东临南海，西濒印度洋，因位于中国以南，印度以东而得名。中南半岛的南部也称“马来半岛”。中南半岛通常特指曾经是法国殖民地的「**」，包括今日的越南、柬埔寨（旧称高棉）、老挝三国，简称「越棉寮」；广义的中南半岛则指「东南亚大陆」，包括越棉寮三国及缅甸、泰国（暹罗）、马来西亚的马来亚地区及新加坡、槟城、马六甲等地。

Indochina, or the Indochinese Peninsula (also known as Mainland Southeast Asia), is a historical name that refers to the continental portion of Southeast Asia lying east of India and roughly south or southwest of China. The historical name "Indochina" has its origins in the French Indochine, a combination of the names of "India" and "China", referring to the location of the territory between those two countries.