Portballintrae Harbour sits within a small horseshoe-shaped bay at the southern end of Bushmills Bay on Northern Ireland's north coast.

The harbour serves the seaside village of Portballintrae, which lies close to Bushmills, and is home to Portballintrae Boat Club. Vessels can anchor in the middle of the bay and land a tender at the pier.

The anchorage offers tolerable shelter in offshore winds but is fully exposed to any northerly swell.

Navigating into the bay requires care, as outlying reefs flank both sides of the entrance and a submerged rock on the eastern side demands particular attention.

The harbour and its surrounding shoreline also provide access to rockpooling and coastal exploration along this stretch of the Causeway Coast.