Bay Olympic is an association football club based in New Lynn, Auckland, New Zealand. They currently compete in the Northern League.
They have won the NRFL Premier League three times.
The club was formed from the merger of Blockhouse Bay (founded 1948) and Green Bay-Titirangi United (founded 1973) in 1998. Blockhouse Bay had been a prominent Auckland team, and were winners of the 1970 Chatham Cup, and losing finalists in 1975. Bay Olympic were losing finalists of the 2010 Chatham Cup. They made it to the semi-final stage of the Chatham Cup for 2011 and also won the 2011 NRFL Premier League.