The Nacra 20 is a catamaran sailing dinghy that was designed by Gino Morrelli and Pete Melvin as a one-design racer and first built in 1998.

[1][2] The design is a development of the Nacra F18 Infusion, using the same rudders, mast, inter-hull beams and other small parts and fittings, but with new, longer hulls.

[5] The design was initially built by Performance Catamarans in Santa Ana, California, United States, but that company is out of business.

All models have fractional sloop rigs with rotating masts, vertical transoms, transom-hung rudders controlled by a tiller and retractable daggerboards.

[1][3] In a 2012 review of the Nacra 20 Carbon in Sail magazine, reviewer Jeremy Evans wrote, "the Nacra 20 Carbon is a spectacular new one-design that is very light—20 pounds lighter than the smaller Formula 18—very stiff and very powerful, with its all-carbon wave-piercing hulls and a superb carbon/Kevlar mainsail ...