Portrait of Leopold I of Belgium is an 1840 portrait painting by the German artist Franz Xaver Winterhalter depicting Leopold I of Belgium.
A German-born prince, Leopold had become the first King of the Belgians following the Belgian Revolution of 1830 that overthrew Dutch rule. He married a French princess Louise of Orléans in 1832. He was also the widower of Princess Charlotte of Wales, who had died in 1817, as well as the uncle of Queen Victoria.
The painting was commissioned by Leopold's father-in-law Louis Philippe I for the Musée de l'Histoire de France at the recently refurbished Palace of Versailles. In 1846 Leopold commissioned another portrait from Winterhalter as a gift for Queen Victoria, which remains in the British Royal Collection.