Cornelius Holmboe (17 April 1881 – 16 November 1947) was a Norwegian politician for the Labour Party.

He was born on 17 April 1881, in Tromsø, the youngest son of physician Johannes Michael Holmboe (1844–1918) and his wife Helga Dybwad (1849–1881).

[2] Holmboe finished his secondary education in Tromsø in 1898, enrolled in law studies and graduated as cand.jur.

He then worked as a jurist and newspaper editor, editing Solungen from 1907 to 1908 and Den 1ste Mai from 1908 to 1909.

Fearing widespread socialism in Norway, the other parliamentary parties defeated the cabinet Hornsrud already after eighteen days, in February 1928, on a vote of no confidence.