What is the inventory number of the Mona Lisa at the Louvre?

The Mona Lisa’s Louvre inventory number is INV 779.

An inventory number is a museum’s cataloguing identifier, not a date, price, or artistic classification. “INV 779” identifies Leonardo da Vinci’s portrait in the Louvre’s collection records, where it is catalogued as an oil painting on a poplar panel.

The number is especially useful because the work has several names: Mona Lisa, La Gioconda, and Portrait of Lisa Gherardini, Wife of Francesco del Giocondo. Those titles refer to the same painting, while INV 779 provides a stable institutional reference.

The panel measures about 77 by 53 centimetres and is associated with Lisa Gherardini, the Florentine wife of Francesco del Giocondo. It entered the French royal collection after Leonardo brought it to France, and it later became part of the Louvre’s holdings. Numbers such as INV 790 or INV 780 are plausible-looking distractors, but they do not identify this masterpiece.