Giełgud, Gielgud (/ˈɡiːlɡʊd/) is a Polish surname.

People with the surname Gielgud include:

• Frank Gielgud ∞ Kate Terry
  • Lewis (Evelyn) Gielgud (1894 – 1953), English scholar and intelligence officer, brother of John and Val
  • Val (Henry) Gielgud (1900 – 1981), English actor, writer, director and broadcaster, brother of John and Lewis
  • (Arthur) John Gielgud (1904 – 2000), English actor, director, and producer, brother of Lewis and Val

• Maina Gielgud (born 1945, London), British ballet dancer and ballet administrator

Items named after people named Gielgud include:

• Gielgud Theatre, London
• 39557 Gielgud, an asteroid