The Vanguard 15 is an American planing sailing dinghy that was designed by Bob Ames as a one-design racer and first built in 1992.

It has a fractional sloop rig with aluminum spars, a raked stem, a vertical transom, a transom-hung rudder controlled by a tiller and a retractable daggerboard.

[1][2][5] The boat has a draft of 3.42 ft (1.04 m) with the daggerboard extended and 6 in (15 cm) with it retracted, allowing beaching or ground transportation on a trailer or car roof rack.

"[5] A 2013 review in Sail1Design noted "the Vanguard 15 boasts one of the strongest class associations of any one-design fleet, running hundreds of events each year.

"[8] In 2014, a Vanguard 15 one-design racer, John Storck III, reported that the boat was falling out of favor with college sailors and that attendance at regattas was declining.