Kristian Birkeland, Norwegian Explorer and auroral scientist, after which is named:

Birkeland current, an electric current found in the aurora and space plasmas

Birkeland, Aust-Agder, a place in Birkenes municipality, Norway.

Birkeland, Hordaland, a place in Austevoll municipality, Norway.

Birkeland (lunar crater), a lunar impact crater in the southern hemisphere on the far side of the Moon.