2039 (MMXXXIX) will be a common year starting on Saturday of the Gregorian calendar, the 2039th year of the Common Era (CE) and Anno Domini (AD) designations, the 39th year of the 3rd millennium, the 39th year of the 21st century, and the 10th and last year of the 2030s decade.
Predicted and scheduled events
- June 21 – Annular solar eclipse over the Northern hemisphere.
- September 2 – The Destroyers for Bases Agreement's ninety-nine-year rent-free leases granted to the United States by the United Kingdom will expire.
- November 7 – Transit of Mercury.