Lawrence Peter "Yogi" Berra (May 12, 1925 – September 22, 2015) was an American professional baseball catcher who later took on the roles of manager and coach. He played 19 seasons in Major League Baseball (MLB) (1946–1963, 1965), all but the last for the New York Yankees. He was an 18-time All-Star and won 10 World Series championships as a player—more than any other player in MLB history. Berra had a career batting average of .285, while hitting 358 home runs and 1,430 runs batted in. He is one of only six players to win the American League Most Valuable Player Award three times. He is widely regarded as one of the greatest catchers in baseball history and was elected to the Baseball Hall of Fame in 1972.

Berra was a native of St. Louis and signed with the Yankees in 1943 before serving in the United States Navy as a gunner's mate in the Normandy landings during World War II, where he earned a Purple Heart. He made his major-league debut at age 21 in 1946 and was a mainstay in the Yankees' lineup during the team's championship years beginning in 1949 and continuing through 1962. Berra was a power hitter and strong defensive catcher, despite being shorter than most in the league at 5 feet 7 inches [1.70 m] tall. Berra played 18 seasons with the Yankees before retiring after the 1963 season. He spent the next year as their manager, then joined the New York Mets in 1965 as coach (and briefly a player again). Berra remained with the Mets for the next decade, serving the last four years as their manager. He returned to the Yankees in 1976, coaching them for eight seasons and managing for two, before coaching the Houston Astros. He is one of nine managers to lead both American and National League teams to the World Series. Berra appeared as a player, coach or manager in 13 of 15 (Brooklyn Dodgers won the 1955 World Series and NY Giants won the 1954 World series and Berra was neither a player, coach or manager of either team) World Series that New York baseball teams won from 1947 through 1981. Overall, he played or coached in 21 World Series, 13 on the winning side. Berra caught Don Larsen's perfect game in Game 5 of the 1956 World Series. He also holds the all-time record for shutouts caught with 173.

The Yankees retired his uniform number 8 in 1972; Bill Dickey had previously worn number 8, and both catchers had that number retired by the Yankees. The club honored him with a plaque in Monument Park in 1988. Berra was named to the MLB All-Century Team in a vote by fans in 1999. For the remainder of his life, he was closely involved with the Yogi Berra Museum and Learning Center, which he opened on the campus of Montclair State University in 1998. Berra quit school after the eighth grade. He was known for his malapropisms as well as pithy and paradoxical statements, such as "It ain't over 'til it's over", while speaking to reporters. He once simultaneously denied and confirmed his reputation by stating, "I really didn't say everything I said."