Carl Semb (19 August 1895 – 16 July 1971) was an internationally renowned Norwegian surgeon and professor at the University of Oslo.

After eighteen years as a district doctor in Gimsøy Municipality and Skjervøy Municipality, Semb became chief physician at the surgical ward at Ullevål hospital (1935–65).

[1] During World War II, Semb engaged in the resistance movement and joined the Milorg.

He is particularly noted for his role in the formation of Norwegian police troops in Sweden during World War II.

His pioneering initiative resulted in health camps and a vaccination plan for the refugees.