The term U.S. Open or US Open is applied to "open" United States-hosted championships in a particular sport (or non-sport organized competitive gaming activity), in which anyone, amateur or professional, American or non-American, and generally, male or female, may compete.
The term most commonly refers to:
Other uses include (in alphabetical order by sport/game):
- U.S. Open Badminton Championships
- U.S. Open Beer Championship
- U.S. Open (bowling)
- U.S. Open Chess Championship
- U.S. Open (crosswords)
- US Open of Curling
- U.S. Open (cycling)
- US Open (darts)
- U.S. Open (go), boardgame tournament
- U.S. Women's Open, golf tournament
- US Open Polo Championship
- U.S. Open pool championships including:
- U.S. Open Straight Pool Championship
- U.S. Open Bank Pool Championship
- U.S. Open Eight-ball Championship
- U.S. Open Nine-ball Championship
- U.S. Open Ten-ball Championship
- US Open Racquetball Championships
- U.S. Open Rubik's Cube Championship
- U.S. Open Cup, soccer tournament held between American soccer clubs from Major League Soccer, minor leagues, and amateur associations
- Burton U.S. Open Snowboarding (2013-2030)
- U.S. Open (squash)
- U.S. Open (swimming)
- U.S. Open of Surfing
- U.S. Open (table tennis)
- U.S. Open Track and Field
- U.S. Open (USACO), United States of America Computing Olympiad-proctored programming competition