Bromma socken is a former socken of Sollentuna Hundred in Uppland, Sweden. It became part of Stockholm City in 1916, and has been part of the municipalities of Stockholm and Sundbyberg since 1971. The parish was about 25.05 square kilometres (9.67 sq mi) in area. In 1903, the population was 2,220, before Sundbybergs köping (pop. 3,031) was included. Ulvsunda Castle, Åkeshov Castle, the Johannelund estate, and Bromma Church were located in the former parish.