The Joint Astronomy Centre (JAC) was a management organisation based in Hilo, Hawaii, which from c.1980-2015 operated two large telescopes at Mauna Kea Observatory on behalf of an international consortium from the United Kingdom, Canada and the Netherlands, and provided support for other telescopes and public outreach activities.

The JAC also maintained the Starlink Project between 2006 and 2015.

Following withdrawal of funding by the partner nations, on March 1, 2015, the Joint Astronomy Centre closed and the facility was handed over to the East Asian Observatory which now runs the James Clerk Maxwell Telescope.

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