Francis Loomis

Francis Loomis may refer to:


 * Francis B. Loomis (1861–1948), 25th United States Assistant Secretary of State
 * Francis Loomis (lieutenant governor) (1812–1892), Lieutenant Governor of Connecticut, 1877–1879
 * Francis Wheeler Loomis (1889–1976), American scientist
 * Francis B. Loomis Jr. (1903–1989), United States Marine Corps general