Asahel Farr (October 10, 1820 – June 13, 1887) was an American surgeon and Wisconsin pioneer.

He graduated from the medical department of Dartmouth College in 1846 and commenced practice as a doctor and surgeon in St. Johnsbury, Vermont.

He moved to Peacham, Vermont, in 1847, where he married Martha Jackson Wheeler and where his father died in 1852.

Farr was a member of the Assembly in 1873 and represented the 8th district of the Senate (at the time Kenosha and Walworth counties) from 1876 to 1877.

Albert and William both became doctors like their father, and Martha married Colonel James R. Nutting.