Gammel Mønt (English: Old Mint) is a street in central Copenhagen, Denmark, located one block west of Gothersgade and Rosenborg Castle Garden.

In 1497, a community of Poor Clare nuns established the Monastery of St. Clare roughly at the junction of present-day Gammel Mønt and Møntergade.

The property then became known as Gammel Mønt, Old Mint, and this name was transferred to the street which emerged between 1631 and 1650 as the former monastery gardens were built over.

All except one of the houses on the south side of the street are listed.

1) was built from 1819–1910 to design by Ulrik Plesner and Aage Langeland-Mathiesen.