Ladd is a surname. Notable people with the surname include:
Alan Ladd (1913–1964), American film actor Alan Ladd, Jr. (1937–2022), American film industry executive and producer Andrew Ladd (b. 1985), Canadian ice hockey player Aspen Ladd (b. 1995), mixed martial arts fighter Azel P. Ladd (1811–1854), American educator Cheryl Ladd (b. 1951), American actress and singer Christine Ladd-Franklin (1847–1930), American psychologist and logician Diane Ladd (1935–2025), American actress Donna Ladd (b. 1961), American journalist Edwin F. Ladd (1859–1925), American politician Ernie Ladd (1938–2007), American football player and wrestler George Ladd (disambiguation) George Ladd (Medal of Honor recipient) (1828 or 1829–1889), American Civil War soldier George Eldon Ladd (1911–1982), American minister and professor George Trumbull Ladd (1842–1921), American philosopher and psychologist Herbert W. Ladd (1843–1913), American politician Helen Ladd, education economist Jean Ladd (1923–2009), All-American Girls Professional Baseball League player Jesse A. Ladd (1887–1957), United States military officer Jim Ladd (1948–2023), American radio personality Jordan Ladd (b. 1975), American actress Joseph Onesimus Ladd (1818–1882), founder of Ladd's cordials in Adelaide, South Australia Kate Macy Ladd (1863–1945), American philanthropist Margaret Ladd (b. 1942), American actress Mike Ladd, American musician Mike Ladd (poet) (b. 1959), Australian poet
Pete Ladd (1956–2023), American baseball pitcher PJ Ladd (b. 1983), American skateboarder William Ladd (1778–1841), American philanthropist and peace advocate William S. Ladd (1826–1893), American banker and politician