Lewis Crum Bidamon (January 16, 1806 – February 11, 1891) was a leader in the Illinois militia that assisted Latter Day Saints in the 1846 "Battle of Nauvoo".

He was a lieutenant colonel of the 32nd Regiment of the Illinois militia, and he helped control the violence being perpetuated against the Latter Day Saints.

Bidamon had been raised as a Lutheran, and he had helped establish a Congregational church in Canton, Illinois, but in general he did not consider himself to be religious.

Bidamon traveled to California during the gold rush and during the American Civil War he was a major and colonel in the Illinois militia.

In 1864, during his seventeenth year of marriage to Emma, Bidamon fathered the child of Nancy Abercrombie, a widow who had recently moved to Nauvoo.