Karabiga, also referred to as Karabuga, is a town (belde) situated in the Biga District of the Çanakkale Province in Turkey. As of 2021, the town has a population of 2,962 residents.
The settlement is geographically positioned at the mouth of the Biga River on a small east-facing bay known as Karabiga Bay. Historically, the area was known by the ancient names Priapus or Priapos.