Clarence Edwin "Cito" Gaston (; born March 17, 1944) is a former Major League Baseball outfielder and manager. His major league career as a player lasted from 1967 to 1978, most notably for the San Diego Padres and the Atlanta Braves. He spent his entire managerial career with the Toronto Blue Jays, becoming the first African-American manager in Major League history to win a World Series title. Cito Gaston managed the Toronto Blue Jays from 1989 to 1997, and again from 2008 to 2010.

Gaston's fortunes, like those of the Blue Jays franchise as a whole, faded after the championship years. The World Series winning clubs had dissipated because of aging players, increased post-Series salary demands, and the failure of new owner Interbrew (which merged with founding owner Labatt in 1995) to raise the budget substantially. After Major League Baseball solved its labor problems in 1994, Pat Gillick and eventually Paul Beeston left the organization and annual attendance began to drop considerably. Yet, the Blue Jays were still trying to compete in the American League East and in 1997 signed free agent Roger Clemens. When the team could barely break the .500 mark all season, Gaston was fired by GM Gord Ash. He had failed to lead the team to a winning record since 1993 and seemed uninterested in keeping his position. Gaston forced Ash's hand by telling his boss that he was taking a vacation at season's end and would not be around for the usual post season evaluation process. He was replaced by then-pitching coach Mel Queen on an interim basis for the last week of the 1997 season. Joe Carter wore Gaston's No. 43 on his jersey for the remainder of the season in part to honor him and in part to express his displeasure at his firing. He finished his first stint as manager with a 683-636 regular season record and 18-16 post-season record.  Gaston was a final candidate for the Detroit Tigers manager's job in the 1999-2000 season and was the runner-up in the Chicago White Sox manager position in the 2003-2004 off season. Sox GM Kenny Williams, a former Blue Jays player, had Gaston as one of two finalists for the job but decided to hire Ozzie Guillen. Gaston had several offers to rejoin major league teams as a hitting instructor, namely the Kansas City Royals, but declined offers. After interviewing unsuccessfully for several other managerial jobs, Gaston said that he would only manage again if he were hired directly without an interview.  Gaston rejoined the team as a hitting coach after the 1999 season but was not retained after a disappointing 2001 campaign and the sale of the franchise to Rogers Communications. In 2002, he was hired by the Jays for a third time, as special assistant to president and chief executive officer Paul Godfrey.

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