John Avery (February 29, 1824 – January 21, 1914) was a physician and politician from the U.S. state of Michigan.

He attended the common schools and entered Grass Lake Academy in Jackson, where he studied medicine for two years.

He graduated from the Cleveland Medical College in 1850 and commenced the practice of medicine in Ionia, Michigan.

He served in the Army of the Cumberland in Kentucky and Tennessee and was with General William Tecumseh Sherman on his March to the Sea, as well as during the subsequent Carolinas Campaign.

[1] After leaving Congress, Avery went back to Greenville and returned to the practice of medicine.