Portrait of a Young Man is a c.1505 oil-on-panel painting by the Italian painter Giovanni Bellini.

It is the latest surviving portrait by the artist, drawing on the work of Antonello da Messina and Dutch painters of the time.

The work was bought by Consul Smith and then passed into the British Royal Collection in 1762 when George III of the United Kingdom bought Smith's collection.

[1] The sitter's robe is that of a 'cittadino', the rank in Venetian society between that of patrician.

His identity is unknown, although a theory arose in the 1940s that he was the humanist Pietro Bembo; Vasari records Bellini painting a lost portrait of Bembo's mistress, whilst Bellini's biographer Carlo Ridolfi mentions a portrait of Bembo in a list of his works, although this is the only documentary mention of any such work.