Offside, off-sides, off-side or off side may refer to:
- A rule in a number of field sports to regulate aspects of player positioning
- Offside (TV show), a Scottish football programme
- Offside (film), an Iranian film released in 2006
- Offside (magazine), a Swedish football magazine
- Off side, the side the striker (batsman) is facing in cricket
- Off-side rule, an interpretation for indentation in some computer programming languages
- In the UK, "Offside" may also refer to the side of a vehicle normally furthest from the kerb.
