Arnold C. Harberger (b. 1924 in Newark, New Jersey) is an American economist. Harberger's Triangle, widely used in welfare economics, is named after him.

Life
Hargerger did a B.A. in economics at Johns Hopkins University. He completed an MA in international relations in 1947 and a Ph.D. in economics in 1950, both at the University of Chicago. After teaching at Johns Hopkins, Harberger returned to Chicago to teach, full time 1953-82, and part time 1984-91. Since 1984 he has had an affiliation with the University of California-Los Angeles. Harberger is married to a Chilean and speaks fluent Spanish.