Lip sync, also lip-sync, lip-synch and short for lip synchronization is a technical term for matching lip movements with pre-recorded sung or spoken vocals
Lip sync may also refer to:
- Lip Sync Battle, American musical reality competition television program which spawned several international versions
- Lip sync error in audio to video synchronization
- Lip Synch (series), series of 5 short films which used vox pops as inspiration for their subject matter