Big stick may refer to:
- Big stick ideology, referring to Theodore Roosevelt's often-quoted aphorism
- Big Stick, West Virginia, a community named for the above
- The nickname of the battleship USS Iowa (BB-61)
- The nickname of the aircraft carrier USS Theodore Roosevelt (CVN-71)
- Rural Municipality of Big Stick No. 141, Saskatchewan
- Big Stick (band), an alternative music act who scored a minor hit in 1986 with "Drag Racing"