Rasmus Christoffer Effersøe (May 30, 1857 – March 23, 1916) was a Faroese agronomist, poet, and politician.

[1][2] His surname comes from the Icelandic island of Effersey (Old Norse Örfirisey 'island of the ebb tide').

[4] Effersøe was educated in Denmark and Sweden, and he worked as an agricultural supervisor.

Effersøe also served as the editor of the newspapers Dúgvan and Dimmalætting, and he wrote for the theater,[5] acted in the theater himself, and wrote poetry,[2] including: Effersøe appears as "the old poet" (den gamle digter) on page 35 of William Heinesen's novel Glataðu spælimenninir (The Lost Musicians).

[3] A bust of Effersøe, created by Anne Marie Carl-Nielsen, was unveiled in 1933 in front of the parliament building in Tórshavn.