Boin may refer to:
- Victor Boin (1886–1974), Belgian freestyle swimmer, water polo player, and épée fencer
- Choi Bo-in, Korean beauty pageant contestant
- Boin (visual novel), Japanese eroge visual novel
- Resort Boin, Japanese eroge visual novel and a sequel to Boin
Usage examples of "boin".
An' he gives me de number of dis house, an' says dis is where a widder-lady lives all alone, an' has got silver mugs and t'ings to boin, an' dat she's away down Sout', so dere ain't nobody in de house.
Money to boin a wet dog wit' he's got, an' never a bit of woik fer it from de start to de finish.