The Freedom 21 is an American trailerable sailboat that was designed by Gary Hoyt and first built in 1982. It was available as a catboat or sloop rig.

The design was built by Tillotson Pearson for Freedom Yachts in the United States from 1982 to 1987, but it is now out of production.

A retractable twin wing keel, iron ballast version was also built in the United Kingdom and at least 40 were sold.

The Freedom 21 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a catboat rig with a freestanding carbon fiber mast and a fully-battened mainsail. A sloop rig was optional. The hull has a raked stem, a vertical transom, a transom-hung rudder controlled by a tiller and a fixed fin keel or shoal draft keel.

The boat is normally fitted with a small 3 to 6 hp (2 to 4 kW) outboard motor for docking and maneuvering.

The design has sleeping accommodation for four people, with a double "V"-berth in the bow cabin and two straight settee berths in the main cabin. The galley is located on the starboard side just aft of the bow cabin. The galley is equipped with a sink. Cabin headroom is 54 in (140 cm).

For sailing the design is equipped with gun-mount spinnaker with a launching tube.

The design has a PHRF racing average handicap of 260 and a hull speed of 5.6 kn (10.4 km/h).