Improvisations are activities, of making and creating, in the moment and in response to the stimulus of one's immediate environment.

Improvisations may also refer to:

• Improvisations (Ravi Shankar album), 1962
• Improvisations (Stéphane Grappelli album), 1956
• Improvisations (Ran Blake & Jaki Byard album), 1981
• Improvisations (Roscoe Mitchell album), 2013

• American (song)
• American Songbag
• American Soul (album)
• American south
• American South African Line
• American South African Lines
• American Southern
• American Southern Cuisine
• American Southern cuisine
• American Southern English
• American-Soviet Peace Walks
• American space policy
• American Space Program
• American spadefoot toads
• American spanish war
• American Specialties
• American spectator
• American Speech Language Hearing Association
• American speedwell
• American Speedwell
• American Sphinx: The Character of Thomas Jefferson
• American Spirit Foundation
• American Sportscopter
• American Sportscopter Inc.
• American Sportscopter, Inc.