The Lion Fountain, also known as the Vilhena Fountain, is a Baroque fountain located in St Anne Square in Floriana, Malta. It was installed in 1728 by Grand Master António Manoel de Vilhena, and it was relocated a few metres from its original location in the 1950s.

António Manoel de Vilhena was a Portuguese nobleman who was the 66th Prince and Grand Master of the Order of St. John of Jerusalem from 19 June 1722 to his death in 1736. Unlike a number of the other Grand Masters, he was benevolent and popular with the Maltese people. Vilhena is mostly remembered for the founding of Floriana, the construction of Fort Manoel and the Manoel Theatre, and the renovation of the city of Mdina.