Jelsa is a town in Croatia, on the island of Hvar, the seat of the eponymous municipality (opcina) within the county of Split-Dalmatia.

The town of Jelsa is situated in a bay on the middle of the north coast of the island of Hvar. To the south of the town are dense pine woods on the sloping hills of the island's ridge. Jelsa is the only place on the island with an abundance of fresh water, as a result of which there is more luxuriant vegetation here than elsewhere. The agricultural plain lying to the west of Jelsa is the UNESCO protected world heritage site Starigrad Plain.