- Location: Coleraine, Northern Ireland
- Open: 1908
- Designer: Ben Sayers
- Major Course Updates: H.S. Colt
- Events Hosted: N/A
- Key Rankings: 5th best golf course in Northern Ireland, Top 100 Golf Courses (2022)
Less than some of the more dramatic Northern Ireland golf courses, Castlerock plays less in the dunes and more in the exposed links land, resulting in a more windswept layout that continues to challenge golfers on this harder-than-usual golf course. The courses relationship with the railway, the river, and the nearby sea is spectacular, and as a result, Castlerock is able to find its own identity to stick out in a very competitive golfing country.