Agnar Johannes Barth (1871–1948) was a Norwegian forester.
He was born in Lillehammer as the son of Jacob Bøckmann Barth. Described as his "country's leading authority on forestry for many years", he was a professor at the Norwegian College of Agriculture from 1921, and served as rector there from 1928 to 1933.
Barth was a reserve officer in the Norwegian Army, attaining the rank of Second Lieutenant in 1891.
- ^ "Barth, Agnar Johannes". Aschehoug og Gyldendals Store norske leksikon. Kunnskapsforlaget. 2007.
- ^ Petersen, Alf (1936). "Barth, Agnar Johannes". Den norske hærs vernepliktige officerer: 1864-1933 (in Norwegian). Oslo: A. M. Hanche. p. 71.