This database is a compilation of cosmogenic nuclide dates obtained from glaciated mountain landscapes across the Mediterranean. The dates have been sourced from the published literature and span the last 300 ka. This database contains 1,118 recalculated TCN ages; 303 moraine landform ages; input data for 10Be and 36Cl age recalculations; and a reference list of publications that present terrestrial cosmogenic nuclide ages in the Mediterranean mountains. This database comprises the source data to: Allard, J.L., Hughes, P.D., Woodward, J.C. (2021) 'Heinrich Stadial aridity forced Mediterranean-wide glacier retreat in the last cold stage', Nature Geoscience. The database has a census date of 1 January 2020.