Hedy (/ˈhɛdi/) is a German given name, sometimes a diminutive form of Hedwig.

Notable people with the name include:

• Hedy Bienenfeld (1907–1976), Austrian-American Olympic swimmer
• Hedy Burress (born c. 1973), American actress
• Hedy d'Ancona (born 1937), Dutch politician, geographer, and sociologist
• Hedy Epstein (1924–2016), German-born Jewish-American political activist
• Hedy Frank-Autheried (1902–1979), Austrian composer
• Hedy Fry (born 1941), Trinidadian-Canadian politician and physician
• Hedy Graf (1926–1997), Spanish-born Swiss classically trained soprano
• Hedy Hahnloser-Bühler (1873–1952), Swiss painter, craftswoman, art collector
• Hedy Iracema-Brügelmann (1879–1941), German operatic soprano of Brazilian birth
• Hedy Klineman, American painter
• Hedy Lamarr (1914–2000), Austrian-American film actress and inventor
• Hedy Schlunegger (1923–2003), Swiss alpine skier
• Hedy Scott (born 1946), Belgian-American model and actress
• Hedy Stenuf (1922–2010), Austrian figure skater who later competed for France and the United States
• Hedy West (1938–2005), American folksinger and songwriter

Fictional characters include:

• Hedra "Hedy" Carlson/Ellen Besch, in the movie Single White Female
• Hedy Newman, a character played by Jane Sibbett from the TV sitcom Herman's Head
• Hedy Wolfe, a Marvel Comics superhero, a friend of fellow superhero Patsy Walker
• Hedy (opera)

• Heide (disambiguation)
• Heidi (disambiguation)