Other
- Jill (cat), a cat on Blue Peter
- Nakajima B6N, Japanese torpedo bomber of World War II
- Jill of the Jungle, a computer game
- A generic representative of the female sex, as in jillstrap (also shortened simply to jill)
- Jill (novel), a novel by Philip Larkin
- A female ferret
- The Buffalo Jills, the Buffalo Bills cheerleading squad
- Jill, one of the Clayton Windmills, at Clayton, Sussex
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