Michaelmas is a day in the Christian calendar.

Michaelmas may also refer to:

• Michaelmas (novel), a science fiction novel by Algis Budrys
• Michaelmas Island, an island in Western Australia
• Michaelmas term, the first term of the academic years of several United Kingdom universities

See also[edit]

• Michaelmas and Upolu Cays National Park, Queensland, Australia
• Michaelmas Daisy, plants in genus Aster
• Michaelmas Term (play), a Jacobean comedy by Thomas Middleton