Delsbo (Swedish: [ˈdɛ̌lsbʊ]) is a locality in Hudiksvall Municipality, Gävleborg County, Sweden, with 2,192 inhabitants in 2010. It is situated some 25 kilometers west of Hudiksvall, in the vicinity of the two lakes of Dellen. The town is known for its assembly of musicians at Delsbo Ancient Farm (Delsbo Forngård) every year.

Research conducted in 2005 revealed that Delsbo has the highest density of villages in Sweden. Approximately 104 different villages are scattered around the Delsbo community, among them the villages Ava, Johannesberg, Loppet, Långbacka, Norrberg, Norrväna, Oppsjö, Sannäs, Stenbo, Vitterarv and Västanäng. A local newspaper-reporter described Delsbo as a place with "a village behind every tree". The population of the Delsbo villages range from one person to a couple of hundred.

Delsbo has a humid continental climate (Dfb). Summers are very warm for the northerly latitude in combination with quite moderate winters, that still retains larger seasonal differences than nearby Hudiksvall.

The local dialect is known as Dellboskan. It is a Norrlandian dialect with some Norwegian attributes.

Examples:

The following sports clubs are located in Delsbo: