Michael Nelson Trout (born August 7, 1991) is an American professional baseball outfielder for the Los Angeles Angels of Major League Baseball (MLB). Trout is an 11-time All-Star, three-time American League (AL) Most Valuable Player (MVP) (winning the award in 2014, 2016, and 2019, while finishing second in 2012, 2013, 2015, and 2018), and nine-time winner of the Silver Slugger Award. He also captained the United States national team during the 2023 World Baseball Classic and was named to the All-World Baseball Classic Team. He is often regarded as the best player of his generation and one of the greatest baseball players of all time.

The Angels selected Trout in the first round of the 2009 MLB draft. He made a brief major league appearance in 2011 before becoming a regular player for the Angels the subsequent season and won the 2012 AL Rookie of the Year Award unanimously. Trout's athleticism on the field has received praise from both the mainstream media and sabermetricians. Trout led the American League in wins above replacement (WAR) in each of his first five full seasons, and is the active leader in the stat with 86.2 WAR.

Trout has led the American League in runs (2012–14, 2016) and times on base (2013, 2015–16, 2018) four times. In 2019, he signed a 12-year, $426 million contract with the Angels, the third-richest contract in the history of North American sports and seventh in professional sports in general (and the second-biggest contract at the time of signing).