Ingalls is a surname of Scottish origin and a placename deriving from the Latin term 'anglicus' referring to a person being from England, and may refer to:

• Ingalls Kimball (1874–1933), American printer and entrepreneur

• Albert Graham Ingalls (1888–1958), former editor of Scientific American and amateur telescope-making enthusiast
• Barbara Ingalls Shook (1938–2008), American philanthropist from Birmingham, Alabama
• Bob Ingalls (1919-1970), American football player and coach
• Bret Ingalls (born 1960), American football coach
• Caroline Ingalls (1839-1924), mother of author Laura Ingalls Wilder
• Carrie Ingalls (1870-1946), younger sister of author Laura Ingalls Wilder
• Charles Ingalls (1836-1902), father of author Laura Ingalls Wilder
• Daniel Henry Holmes Ingalls, Jr. (born 1944), an American pioneer of object-oriented computer programming and principal architect, designer and implementer of five generations of Smalltalk environments
• Daniel H. H. Ingalls, Sr. (1916–1999), Professor of Sanskrit at Harvard University
• David Sinton Ingalls (1899–1985), American businessman, politician and first flying ace in US Navy history
• Don Ingalls (1918-2014), American screenwriter and television producer
• Edmund Ingalls (c. 1598–1648), founder of Lynn, Massachusetts
• Eliza Buckley Ingalls (1848–1918), American temperance activist
• George Alan Ingalls (1946-1967), American soldier posthumously awarded the Medal of Honor
• George L. Ingalls (1914–2001), New York politician
• Grace Ingalls (1877-1941), younger sister of author Laura Ingalls Wilder
• James Monroe Ingalls (1837–1927), American soldier and ballistics authority
• Jeremiah Ingalls (1764–1838), one of the first American composers
• John James Ingalls (1833–1900), Republican member of Kansas state legislature and U.S. Senator from Kansas
• Joshua K. Ingalls (1816–1898), inventor, land reformer, and anarchist theorist
• Laura Ingalls (disambiguation), several people
• Mary Ingalls (1865-1928), older sister of author Laura Ingalls Wilder
• Melville E. Ingalls (1842–1914), American politician and railroad president
• Rachel Ingalls (1940–2019), American-born author living in the UK
• Robert Ingersoll Ingalls, Sr. (1882–1951), American businessman and philanthropist
• Rufus Ingalls (1818–1893), US Army general and Quartermaster General
• Sheffield Ingalls (1875–1937), American banker, attorney and politician, 20th Lieutenant Governor of Kansas
• Wallace Ingalls (1859–1936), American lawyer and politician
• Wilbur R. Ingalls, Jr. (1923-1997), American architect

• Ingalls, Arkansas, an unincorporated community
• Ingalls, Indiana. a town
• Ingalls Township, Gray County, Kansas
  • Ingalls, Kansas, a city in the township
• Ingalls, Michigan, an unincorporated community
• Ingalls, Missouri, a ghost town
• Ingalls, North Carolina, an unincorporated community
• Ingalls, Oklahoma, a ghost town
• Lake Ingalls, Washington
• Mount Ingalls (California)

• Ingalls (crater), on the Moon
• Ingalls Head, New Brunswick, Locality on the Island of Grand Manan, New Brunswick

• Ingalls Building, Cincinnati, Ohio, the world's first reinforced concrete skyscraper
• Ingalls Memorial Hospital, Harvey, Illinois
• Ingalls House (disambiguation)
• Ingalls Rink, a hockey rink owned by Yale University in New Haven, Connecticut

• Ingalls Shipbuilding, now part of Northrop Grumman Ship Systems
• Albert Quinn Ingalls, a fictional character in the TV series Little House on the Prairie

• Ingall (surname)
• Ingles (surname)