Cliff Swain (born March 21, 1966) is a professional racquetball player and coach from Boston, Massachusetts.

Known for his dominant drive serve and on-court intensity, Swain finished as the #1 player on the International Racquetball Tour (IRT) six times -- in 1990, 1993, 1994, 1995, 1998, and 2002.

[1] Swain was naturally talented and quickly picked up the game, soon winning the Massachusetts State and New England Regional Junior Racquetball Championships.

In 1990, at the age of 24 and when he was ranked #1, Swain left racquetball to pursue a career in tennis at the encouragement of Ion Tiriac.

Swain is also an accomplished outdoor racquetball player, teaming with Josh Tucker to beat #2 ranked Rocky Carson and #4 ranked Jose Rojas on the way to the 2014 World Outdoor Racquetball (WOR) Pro Doubles Championship.