Sully Sailing Club is a small, community-run dinghy and catamaran sailing club situated on Sully Bay, near Cardiff in the Vale of Glamorgan, South Wales.

The club holds Welsh Yachting Association "Dragon Sail" status and offers racing every Sunday through the season, with handicap fleets catering to a range of skill levels.

The site features a modern clubhouse with disabled access and hot showers, along with what the club describes as the longest slipway in the Bristol Channel — enabling launching at virtually any state of tide. Windsurfers and canoeists are also welcome.

A fleet of club boats, including Lasers, Toppers, Topaz dinghies, and an Argo, is available for members to hire.