Arnt Severin Ulstrup (24 September 1862 – 1922) was a Norwegian physician and politician for the Conservative Party.
He was elected to the Norwegian Parliament in 1910 from the constituency Østerrisør, and was re-elected in 1913.
[1] Born in Brekkestø, he enrolled as a student in 1883 and graduated as cand.med.
He was a member of Risør city council, and was also director of the local savings bank for some time.
This article about a Norwegian politician born in the 1860s is a stub.