阿隆·科普兰（英语：Aaron Copland，1900年11月14日－1990年12月2日），美国古典音乐作曲家、指挥家和钢琴家。

科普兰的祖先为立陶宛犹太人，家族移居美国之时，将原来的姓氏“卡普兰”（Kaplan）改成“科普兰”（Copland）。。15岁时，科普兰聆听了波兰钢琴家帕德雷夫斯基的一场音乐会后，决定以作曲为职业。1921年他前往巴黎，成为娜迪亚·布朗热门下第一个正式的美国学生。日后声名日隆，曾于1945年以作品《阿帕拉契之春》（Appalachian Spring）获得音乐类的普立兹奖。晚年创作极少，主要从事指挥工作，1990年去世之时，他已经被认为是美国最伟大的古典音乐作曲家之一，是美国民族风格的代表。

Aaron Copland (/ˌærən ˈkoʊplənd/; November 14, 1900 –December 2, 1990) was an American composer, composition teacher, writer, and later in his career a conductor of his own and other American music. Instrumental in forging a distinctly American style of composition, in his later years he was often referred to as "the Dean of American Composers" and is best known to the public for the works he wrote in the 1930s and 1940s in a deliberately accessible style often referred to as "populist" and which the composer labeled his "vernacular" style.