Caulfield or Caulfeild is a surname of several separate origins. The name is usually a simplified form of a number of Gaelic surnames, often MacCathmhaoil. Caulfield is also the name of a prominent Anglo-Irish family. People with this surname include:
Annie Caulfield, author
Billy Caulfield, English footballer
Elizabeth Jane Caulfeild, Countess of Charlemont, wife of the 3rd Earl of Charlemont
Emma Caulfield, actress in Buffy the Vampire Slayer
Francis William Caulfeild, 2nd Earl of Charlemont (1775–1863)
Frank J. Caufield, founder of venture capital firm Kleiner Perkins Caufield & Byers
Henry S. Caulfield, former Governor of Missouri
James Caulfeild, 1st Earl of Charlemont (1728–1799)
James Caulfeild, 3rd Earl of Charlemont (1820–1892)
Jay Caufield, former NHL right winger
Jo Caulfield, British comedian
Joan Caulfield, American post-World War II actress
John Caulfeild (1661–1707), son of William Caulfeild
John Joseph Caulfield, American major league baseball player
Joseph Caulfield James, tutor to Prince Vajiravudh of Thailand
Maxine Caulfield, main character of the video game Life Is Strange
Maxwell Caulfield, actor
Patrick Caulfield, British artist
Thomas J. Caulfield, American architect
William Caulfeild, 1st Viscount Charlemont (1624–1671)
William Caulfeild, 2nd Viscount Charlemont (c.1655–1726)