Bartolo Colón (born May 24, 1973), nicknamed "Big Sexy", is a Dominican and American former professional baseball pitcher. He previously played for 11 different Major League Baseball (MLB) teams: the Cleveland Indians (1997–2002), Montreal Expos (2002), Chicago White Sox (2003, 2009), Los Angeles Angels of Anaheim (2004–2007), Boston Red Sox (2008), New York Yankees (2011), Oakland Athletics (2012–2013), New York Mets (2014–2016), Atlanta Braves (2017), Minnesota Twins (2017), and Texas Rangers (2018). Colón also played for the Águilas Cibaeñas of the Dominican Professional Baseball League (Dominican Winter League) and the Acereros de Monclova of the Mexican League.

Colón was selected to four MLB All-Star Games, one each for the Indians (1998), Angels (2005), Athletics (2013), and Mets (2016). He won the American League Cy Young Award with the Angels in 2005, when he led the league in wins. With the Mets in 2016, he became the oldest player to hit his first career home run, at 42 years and 349 days old. At age 45 during the 2018 season, Colón was the oldest active major league player and the last to have played for the Montreal Expos. He holds the record for most career wins by a Latin American-born pitcher.

In his last major-league season (2018), Colón and Rangers teammate Adrián Beltré were the last active players to have played in the 1990s. In August 2022, Colón announced that he intended to retire after the 2022–23 Dominican winter season.

Colón grew up in the town of Altamira in the Dominican Republic. He worked long days alongside his father, Miguel, harvesting coffee beans and fruit from the age of 9 to 14. Colón credited his childhood job with the development of his strength. He frequently does major charity work for his old community. Colón's mother, Adriana, died in 2014 of breast cancer.

Colón was signed by the Cleveland Indians as an amateur free agent in 1993 and began his career in their minor league system. In 1995, pitching for Kinston of the Single-A Carolina League, he finished second in wins with 13 and ERA with 1.96, and led the circuit with 152 strikeouts. He was named the league's Pitcher of the Year, despite shutting down on August 1 with a bruised elbow. He was named the Indians' 1995 Minor League Player of the Year (receiving the "Lou Boudreau Award"). He played Triple-A ball with the Buffalo Bisons in 1997 and on June 21 became the only player in team history to throw a no-hitter at Sahlen Field, then called North AmeriCare Park.

Colón made his major league debut against the Anaheim Angels on April 4, 1997, receiving a no decision. In his first MLB season, Colón went 4–7 with a 5.65 earned run average. He was left off the postseason roster as the Indians made it to the World Series, losing in seven games to the Florida Marlins. The following year, he set the modern-day but unofficial major league record for throwing the most pitches (20) in a single at bat on June 26, 1998 against Ricky Gutiérrez, who eventually struck out. That record was broken in 2018. Later that season, Colón won his only start of the 1998 American League Championship Series, pitching a four-hit, one-run complete game. In his 1999 season, Colón finished 18–5, pitching over 200 innings with 161 strikeouts and a 3.95 earned run average.

On September 18, 2000, Colón pitched a one-hitter against the New York Yankees. In both 2000 and 2001, Colón posted over 200 strikeouts, making him the first Indians pitcher since Gaylord Perry to record at least 200 strikeouts in back-to-back seasons.

On June 27, 2002, the Indians traded Colón and Tim Drew to the Montreal Expos in exchange for Lee Stevens, Brandon Phillips, Grady Sizemore, and Cliff Lee. Colón finished 2002 with a combined 20–8 record and a 2.93 earned run average, including 76 earned runs with 70 walks in 233+1⁄3 innings, three shutouts, and eight complete games. Ultimately, he was the last active player who had played for the Montreal Expos.