Trefaldighetskyrkan, Former Methodist church building on Majorsgatan, Östermalm, Stockholm, Sweden

Trefaldighetskyrkan is a former Methodist chapel at Majorsgatan 5–7, near Östermalmstorg in Stockholm. Built in 1893–1894 in Neo-Gothic style, it is a red-brick building with decorative details in limestone and sandstone. Its east front has a tall central section with large windows of the upper-floor church hall, flanked by side sections whose portals lead up stairways to the worship room.

The Methodist congregation announced an architecture competition in 1893 for a new church on Majorsgatan. Isak Gustaf Clason judged it and favoured Johan Nordqvist's central-plan drawings, but had Johan Laurentz rework the facades. Built in Neo-Gothic style in 1893–1894 in red brick with limestone and sandstone details, the church was listed as a building monument in 1970, sold to director Jonas Åkerlund in 2014 and acquired by Soho House in 2021.

The building was long the meeting hall of the Trefaldighets Methodist congregation, which sold it in 2014 to film director Jonas Åkerlund because the congregation had grown too small to cover its costs. Since 2021 it has belonged to the private members' club Soho House, which converted the former church hall into a club space.

The building at Majorsgatan 5–7 is no longer a church: the congregation sold it in 2014, and since 2021 it has belonged to the Soho House club, so it is not open to the public as a place of worship. The red-brick facade with limestone and sandstone details can be seen from the narrow street near Östermalmstorg.

The building was the first free church in Sweden to be declared a listed building (byggnadsminne), in 1970; the protection covers the exterior and the church hall. Stockholm City Museum has also given the property its blue marking, meaning it is judged to have exceptionally high cultural-historical value.