Rudolf Emanuel Jacobsen (27 October 1879 – 1937) was a Norwegian architect.

He was a student at the Arts and Crafts School (Kunst- og håndverksskolen), now Norwegian National Academy of Craft and Art Industry (Statens håndverks- og kunstindustriskole).

[2] He served as an assistant architect with Bredo Greve and Ingvar Hjorth.

[3] Jacobsen was among the architects who contributed to the 1914 Jubilee Exhibition at Frogner Park in 1914, where he co-designed (with August Nielsen) the main restaurant (Folkerestauranten), Agricultural Building (Landbruksbygningen) and Forestry Building (Skogbruksbygningen).

Among Jacobsen's other works were Bytårnet in Moss, Doblouggården and Oslo hovedpostkontor.