Hans Geelmuyden (10 January 1844 – 1 May 1920) was a Norwegian astronomer.

[1] He was a relative of Ivar Christian Sommerschild Geelmuyden and Carl Victor Emanuel Geelmuyden, and the family had migrated from the Dutch Republic during the seventeenth century.

[2] From 1890 to 1919 Hans Geelmuyden was a professor of astronomy at the University of Kristiania as well as the director of the observatory there.

From 1892 to his death he edited the official Norwegian almanac.

[1] In all three positions he was succeeded by Jens Fredrik Schroeter.