贾利·古柏（Gary Cooper，1901年5月7日－1961年5月13日）是一位美国知名演员，曾经获得5次奥斯卡最佳男主角奖提名，总共夺得2次奥斯卡最佳男主角奖（《约克军曹》与《日正当中》）与1次金球奖最佳男主角，他也在1961年获得奥斯卡终身成就奖。他被他的同事暱称为「Coop」。

在1999年时，他被美国电影学会选为百年来最伟大的男演员第11名。除了《日正当中》的角色以外，古柏主演的《约克军曹》、《洋基之光》中的卢·贾里格与威尔·肯，皆列入2003年的AFI百年百大英雄与恶魔的名单中。

Gary Cooper (born Frank James Cooper; May 7, 1901 – May 13, 1961) was an American film actor known for his natural, authentic, and understated acting style and screen performances. His career spanned thirty-five years, from 1925 to 1960, and included leading roles in eighty-four feature films. He was a major movie star from the end of the silent film era through the end of the golden age of Classical Hollywood. His screen persona appealed strongly to both men and women, and his range of performances included roles in most major movie genres. Cooper's ability to project his own personality onto the characters he played contributed to his appearing natural and authentic on screen. The screen persona he sustained throughout his career represented the ideal American hero.