Ledyard is both a surname and a given name. Notable people with the name include:
Surname:
Gari Ledyard (1932–2021), Sejong Professor of Korean History
Grant Ledyard (born 1961), National Hockey League defenseman
Hal Ledyard (1931–1973), gridiron football player
Henry Ledyard (1812–1880), American politician
Isaac Ledyard (1755–1803), American physician
Lewis Cass Ledyard (1851–1932), American lawyer
John Ledyard (1751–1789), American explorer and adventurer
William Ledyard (1738–1781), colonel in the Continental Army during the American Revolutionary War
Middle name:
Seth Ledyard Phelps (1824-1885), United States Navy officer, diplomat, and politician
Given name:
C. Ledyard Blair (1867–1949), American investment banker and yachtsman
Ledyard Bill (1836–1907), American politician, publisher, and writer
Ledyard Blair Clark (1917–2000), American liberal journalist and political activist, grandson of C. Ledyard Blair
Ledyard Mitchell (1881–1964), American automobile executive and American football player
G. Ledyard Stebbins (1906–2000), American botanist and geneticist
Ledyard Tucker (1910–2004), American mathematician