Newhaven and Seaford Sailing Club (NSSC) is a family-friendly watersports club and RYA training centre founded in 1952, based in East Sussex.

The club operates two main sailing locations: a beach site at Seaford used primarily for dinghy and catamaran racing, and a lake and marina facility at Piddinghoe near Mill Creek.

Members can participate in dinghy, catamaran, keelboat, and windsurfing sailing and racing throughout the year, as well as kayaking, canoeing, and paddleboarding. The club also runs a supported sailing programme for people with disabilities.

Taster sessions are available for prospective members between April and September, offering short introductory sails with an instructor.