Ruck may refer to;
- Ruck (rugby union), a contesting for the ball in Rugby Union from a grounded player
- Ruck (Australian rules football), an aerial contest in Australian rules football between rival ruckmen
- Ruck, the area surrounding a tackled player in rugby league football
- short for Rucksack
It may also refer to certain people or companies:
- Sean Price, American rapper who went by the name Ruck as a member of Heltah Skeltah
- Alan Ruck (born 1956), American actor
- Calvin Ruck (1925–2004), Canadian Senator, author
- James Ruck, inventor of the Ruck machine gun post
- Ruck Off Rugby, Rugby Fashion Company