Vaxholm is a city, urban area and the seat of Vaxholm Municipality, Stockholm County, Sweden. It occupies the islands of Vaxön and Kullö in the Stockholm archipelago. The name Vaxholm comes from Vaxholm Fortress, which was constructed in 1549 on the adjacent islet of Vaxholmen.

Vaxholm Municipality is a municipality in Stockholm County in east central Sweden. The municipal slogan is "Vaxholm – the capital of the archipelago", due to its central location in the archipelago. Its seat is located in the city of Vaxholm.