Waldemar Christofer Brøgger ForMemRS[1] FRSE (10 November 1851 – 17 February 1940) was a Norwegian geologist and mineralogist.

In the winter of 1875–76, he made a study trip together with fellow student Hans Reusch (1852–1922) to Corsica and Elba.

The subject of the differentiation of rock-types in the process of solidification as plutonic or volcanic rocks from a particular magma received much attention from him.

He dealt also with the Palaeozoic rocks of Norway, and with the late glacial and post-glacial changes of sea level in the Christiania region.

[7] In 1895 Brøgger was appointed a knight of the 1st class in the Order of St. Olav and was in 1902 promoted to commander with a star.

Anton Wilhelm's son, writer Waldemar Christofer Brøgger (1911–1991), was named after his grandfather.