Keem Bay () is located past Dooagh village in the west of Achill Island in County Mayo, Ireland. It contains a Blue Flag beach. The bay was formerly the site of a basking shark fishery.
During the 19th century, the British government established a lifeboat station on Keem Beach. The lifeboat station was operational for over 100 years providing a vital service for those who lived and worked on the coast.
The bay was used as a filming location for the 2022 film The Banshees of Inisherin.