An over–under bet is a type of wager at a sportsbook.
Over–under, Over/under or Over and under may also refer to:
Over/under cable coiling, a method of storing cables that preserves the capacitance and common-mode rejection ratio Over–under position, a stand-up grappling position in mixed martial arts Over and under shotgun, a double-barreled shotgun in which the two barrels are arranged vertically Over and Under, an album by folk musician Greg Brown, 2000 Over and under, the possible alternatives for toilet paper orientation Over/Under, a series by the music publication website Pitchfork