John Galt is the name of:

• John Galt (Atlas Shrugged), a character in Ayn Rand's novel Atlas Shrugged
• John Galt (novelist) (1779?1839), a Scottish novelist and colonial administrator
• John Galt (screenwriter), writer of the film Undiscovered.
• John Galt Corporation, a New York company involved with demolishing the former Deutsche Bank Building