Other
- Battle of Bash Abaran, Caucasus, 1918
- Broken Arrow Senior High, the highest level of secondary education in Broken Arrow, Oklahoma
- Bird Aircraft Strike Hazard (BASH), bird strike in aviation
- Bash Back!, a network of radical, anarchist and anti-authoritarian queer projects within the United States
- Bash Chelik ("Man of Steel"), a famous Serbian folk tale
- British Association for the Study of Headache (BASH), UK charity and member of the Headache UK alliance
- Qizilbash, a Muslim religious brotherhood
- Kitbashing, a scale modeler's term for modifying a commercial model kit into a unique or unavailable model
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