Richard Alexander Ankiel (/ˈæŋkiːl/; born July 19, 1979) is an American former professional baseball center fielder and pitcher. He spent most of his Major League Baseball (MLB) career with the St. Louis Cardinals, but also played for the Kansas City Royals, Atlanta Braves, Washington Nationals, Houston Astros, and New York Mets.

Ankiel was a pitcher with the Cardinals from 1999 until 2001 when he found himself unable to throw strikes consistently. After trying to regain his pitching form in the minor leagues and briefly returning to the majors in 2004, he switched to the outfield in early 2005. For two and a half years, he honed his skills as a hitter and fielder in the Cardinals' minor-league system. He returned to the Cardinals on August 9, 2007. As a Cardinal until 2009, Ankiel hit 47 home runs as an outfielder and two as a pitcher. After the 2009 season, Ankiel became a free agent. Subsequently, he was signed by the Royals and later was traded to the Braves.

Ankiel became the first player after Babe Ruth to win at least 10 games as a pitcher and also hit at least 70 home runs. Ankiel is also the only player other than Ruth to both start a postseason game as a pitcher and hit a home run in the postseason as a position player. His change of position, and the fact that he played for six teams in a five-season span, suggest that Ankiel's playing history represents "one of the stranger careers in baseball history" in the words of journalist Barry Petchesky.

Ankiel was one of three children born to Denise and Richard Ankiel Sr. His father worked various odd jobs, was arrested 14 times and convicted 6 times by the time Ankiel was an adult. He described his father as very tough on him, making him run wind sprints if he swung at bad pitches in Little League.

Ankiel attended Port St. Lucie High School in Florida, where he went 11–1 with a 0.47 earned run average (ERA) during his senior season, striking out 162 batters in 74 innings pitched, and was named the High School Player of the Year by USA Today in 1997.

The St. Louis Cardinals selected Ankiel in the second round of the 1997 Major League Baseball Draft. He received a $2.5 million signing bonus. In 1998, he was voted the best pitching prospect in both the Carolina and Midwest League, and was the Carolina League's All-Star starting pitcher, Baseball America's first-team Minor League All-Star starting pitcher, and the Cardinals' Minor League Player of the Year. That year, he led all minor league pitchers in strikeouts with 222.

In 1999, Ankiel was named the Minor League Player of the Year by both Baseball America and USA Today. He was also Texas League All-Star pitcher, Double-A All-Star starting pitcher, Cardinals Minor League Player of the Year, and Baseball America First Team Minor League All-Star starting pitcher.

Ankiel debuted in 1999 in Montreal, against the Expos. He pitched his first full season in 2000 at the age of 20 (second youngest player in the league), posting an 11–7 record, a 3.50 ERA (tenth in the league), and 194 strikeouts (seventh in the league) in 30 games started. Ankiel threw a 94- to 97-mph fastball, a heavy sinker, and a fall-off-the-table curveball that was his main strikeout pitch. He struck out batters at a rate of 9.98 strikeouts per nine innings (second in the National League only to Randy Johnson), and allowed only 7.05 hits per nine innings (second only to Chan Ho Park). He came in second (to the Atlanta Braves' Rafael Furcal) in the NL Rookie of the Year voting. He received The Sporting News Rookie Pitcher of the Year Award.