Robert G. Ingersoll (1833–1899), orator and political leader

Ingersoll Rand, industrial firm founded by Simon Ingersoll (see below)

Jared Ingersoll (1749–1822), United States Constitution signer

Ingersoll Township, Michigan, town in the state of Michigan, United States

Ingersoll, Ontario, town in Oxford County on the Thames River in southwestern Ontario, Canada

Thomas Ingersoll, early settler in Upper Canada

USS Ingersoll, ships named Ingersoll in the United States Navy

Jonathan E. Ingersoll, American economist

Jonathan Ingersoll, Lieutenant Governor of Connecticut from 1816 to 1823

Ingersoll, Oklahoma, town located in the state of Oklahoma, United States

Ralph Ingersoll, a United States Representative and a publisher

Royal Ingersoll, men associated with the United States Navy

Simon Ingersoll (1818–1894), founder of the company that is now known as Ingersoll Rand.