Windsor is an English surname. Notable people with the surname include:

• Barbara Windsor (1937–2020), English actress
• Claire Windsor (1892–1972), American actress
• Devon Windsor (born 1994), American model
• Frank Windsor (1928–2020), English television actor
• Gerard Windsor (born 1944), Australian author
• Gloria Windsor (born 1935), American model
• Harry Windsor-Fry (1862–1947), British painter and educator
• Marie Windsor (1919–2000), American actress
• Robin Windsor (1979–2024), British dancer

• Lady Amelia Windsor (born 1995), English model
• Andrew Windsor, 1st Baron Windsor (1467–1543), English nobleman
• Lord Frederick Windsor (born 1979), member of the British royal family
  • Sophie Winkleman (Lady Frederick Windsor) (born 1980), wife of Lord Frederick
• Lady Gabriella Windsor (born 1981), reporter, member of the British royal family
• Lady Louise Mountbatten-Windsor (born 2003), granddaughter to Queen Elizabeth II
• Lord Nicholas Windsor (born 1970), member of the British royal family, and his son Albert
• Elizabeth II (1926-2022), Queen of the United Kingdom and other Commonwealth realms^[1]
• Charles III (born 1948), King of the United Kingdom and other Commonwealth realms
• Duke of Windsor, formerly King Edward VIII of the United Kingdom
• Wallis Simpson (Wallis, Duchess of Windsor), wife of the Duke
• Earl of Windsor
• Viscount Windsor
• Baron Windsor

• Tony Windsor (born 1950), Australian independent politician
• Walter Windsor (1884–1945), British Labour Party politician

• Bobby Windsor (born 1948), Welsh rugby union player
• Harley Windsor (born 1996), Australian figure skater
• Jason Windsor (born 1982), American baseball player
• John Windsor (born 1940), American basketball player

• Cecil Stanley Windsor (1879–1926), Managing Director of Windsor, British automobile company
• Edith Windsor (1929–2017), American LGBT rights activist
• Peter Windsor (born 1952), British journalist and reporter
• Richard Windsor, American explorer
• Robert Windsor (disambiguation), multiple people
• Roger Windsor, British labour union leader and former chief executive of the National Union of Mineworkers

• House of Windsor, the house or dynasty of the present British Royal Family
• Winsor (surname)