Nils Ivar (Nils-Ivar) Carlborg (29 March 1913 – 21 September 2005) was a Swedish Army officer.

Carlborg was born on 29 March 1913 in Småland Artillery Regiment Parish (Smålands artilleriregementes församling), Jönköping, Sweden,[1] the son of lieutenant colonel Nils Gustaf Carlborg och Elisabeth Hugoson.

To gain personal insight into an attacker's possibilities and limitations, he underwent parachute training in the United States.

The experience from this led him to propose that Swedish airborne ranger units be established, as the costs should be able to be reduced to a reasonable level.

[8] Carlborg was promoted to major in Boden Artillery Regiment this year and was the school's first head from 1952 to 1953.