The Finn dinghy is the men's single-handed, cat-rigged Olympic class for sailing. It was designed by Swedish canoe designer, Rickard Sarby, in 1949 for the 1952 Summer Olympics in Helsinki. Since the 1952 debut of the boat, the design has been in every summer Olympics, making it one of the most prolific Olympic sailboats.

Although the Finn hull has changed little since 1949, there have been developments to the rig. The original spars were made of wood until the late 60’s and early 70’s when there was a slow change to Aluminum masts. Aluminum is significantly more flexible and gives more control over sail shape. It became common place after the 1972 Summer Olympics in Kiel when they were first supplied to Olympic sailors. Recently, carbon fiber masts have become common place in competitive Finn fleets. The sails too have gone through revolution and are now commonly made of Kevlar.

The Finn Gold cup recognised as the World Championship for the Finn class International Sailing Federation

Finn (pl. Finns) is commonly used to refer to a member of the Finn ethnic group or a citizen of Finland.

Zach Railey (born May 9, 1984 in St. Petersburg, Florida) is an American sailor and Olympic athlete who won a silver medal in sailing at the 2008 Summer Olympics.