安德烈·阿加西（英文：Andre Kirk Agassi，1970年4月29日－），生于美国拉斯维加斯，已退役的美国男子网球运动员，单打最高世界排名第一，网球史上第一位男子单打金满贯，8座大满贯单打桂冠及1996年亚特兰大奥运会网球男子单打金牌得主，国际网球名人堂成员。

2006年美国网球公开赛男子单打比赛第三轮（2006年9月3日），阿加西以盘数1-3（比分 : 5–7、7–6、4–6、5–7）败给本杰明·贝克尔出局，职业生涯至此退役，生涯累积达870胜和60个ATP单打冠军。阿加西是首位在草地、泥地、硬地及快速硬地上赢得男子单打职业生涯大满贯的运动员。他与德国网球选手格拉芙（历史上唯一的年度单打金满贯得主）是“网坛金满贯夫妇”。2011年7月9日，阿加斯成为国际网球名人堂一员。

Andre Kirk Agassi (/ˈɑːndreɪ ˈæɡəsi/; born April 29, 1970) is an American retired professional tennis player and former World No. 1, who was one of the game's most dominant players from the early 1990s to the mid-2000s. Generally considered by critics and fellow players to be one of the greatest tennis players of all time, Agassi had been called the greatest service returner in the history of the game. Described by the BBC upon his retirement as "perhaps the biggest worldwide star in the sport's history", Agassi compiled performances that, along with his unorthodox apparel and attitude, saw him cited as one of the most charismatic players in the history of the game. As a result, he is credited for helping to revive the popularity of tennis during the 1990s.