Laine is Finnish and Estonian for "wave", and a surname in various languages. Laine is a surname originating in Finland (in Finnish, it means "wave"), where it is the seventh most common surname. In Estonia, it is also a female given name. Notable people with the name include:
- Célestin Lainé
- Charlie Laine
- Cleo Laine
- Denny Laine
- Edvin Laine
- Simon Laine
- Emma Laine
- Frankie Laine
- Helena Laine
- Janet-Laine Green
- Jarkko Laine
- Jo Jo Laine
- Lari Laine
- Murray De-Laine
- Papa Jack Laine
- Paul Laine
- Skylar Laine
- Teemu Laine