Lasek may refer to:
- LASEK or photorefractive keratectomy, a laser eye surgery technique
- Lasek, Lower Silesian Voivodeship (south-west Poland)
- Lasek, Kuyavian-Pomeranian Voivodeship (north-central Poland)
- Lasek, Łódź Voivodeship (central Poland)
- Lasek, Lesser Poland Voivodeship (south Poland)
- Lasek, Gostynin County in Masovian Voivodeship (east-central Poland)
- Lasek, Grodzisk Mazowiecki County in Masovian Voivodeship (east-central Poland)
- Lasek, Otwock County in Masovian Voivodeship (east-central Poland)