Tårnby Municipality (Danish: Tårnby Kommune, Danish pronunciation: [ˈtsʰɒːnˌpyˀ kʰoˈmuːnə]) is a kommune bordering Copenhagen Municipality on the island of Amager just east of Zealand in eastern Denmark.

The municipality includes the islands of Saltholm (16 km2;2 inhabitants 1 January 2020) and Peberholm (1.3 km2), and covers an area of 64.95 km2 of which 48.9 on Amager.

Its mayor is Allan S. Andersen, a member of the Social Democrats (Socialdemokraterne) political party.

The municipality is primarily an amalgamation of the formerly independent towns of Tårnby and Kastrup, as well as the earlier villages of Ullerup and Tømmerup.

To the east is the Øresund (the Sound), the strait which separates Zealand from Sweden.

The E20 Amager Motorway (Amagermotorvejen) / Øresund Motorway (Øresundsmotorvejen) runs through Tårnby, where in the east it crosses over the Øresund and over the island of Peberholm to Sweden as the Øresund Bridge, and to the west it crosses over Køge Bay to Avedøre Holme in Hvidovre municipality as the 241-meter long Kalvebod Bridge (Kalvebodbroen).

[6] Tårnby's municipal council consists of 19 members, elected every four years.