Großsolt (Danish: Store Solt) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

The municipality of Großsolt is located about ten kilometers south of Flensburg and consists of the villages Großsoltholz ( Store Soltskov ), Großsoltwesterholz, Großsoltbrück ( Store Soltbro ), Bistoft, Estrup, Kollerup, Mühlenbrück ( Møllebro ) and Großsolt itself.

At the end of the Second World War, in May 1945, Heinrich Himmler temporarily stayed with his entourage in Kollerup ( ♁ Lage ).

Himmler had come to the Flensburg area via the so-called Rattenlinie Nord to take part in the last Reich government in Flensburg-Mürwik .

After being denied a place in the new government, he fled further south to Bremervörde, where he was captured by British soldiers and shortly afterwards died by suicide on May 23, 1945 in Lüneburg.