Helsingfors Segelklubb ry (HSK; Helsinki Sailing Club) is a yacht club in Lauttasaari, Helsinki, Finland.

The club was established in 1899 under the name Helsingfors Arbetare Segelklubb (Helsinki workers sailing club).

Most members were Swedish-speaking Finns.

The first harbor was located in the western part of Helsinki.

In 1919, after the Independence of Finland, the club was registered with the name Helsingfors Segelklubb.