Portrait of Sir William Chambers

Portrait of Sir William Chambers is a 1780 portrait painting by the British artist Joshua Reynolds depicting the architect William [Chambers (architect)|William Chambers]. Reynolds was the first president of the Royal Academy. The Royal Academy had recently moved into new headquarters at Somerset House on the Strand in London. Chambers, also a prominent member of the Academy, had designed the new building. Reynolds portrays him with a porte crayon in his hand, against the backdrop of Somerset House.
It is likely the painting was produced as a pendant to hang alongside the Self-Portrait by Reynolds in the Assembly Room at Somerset House. The engraver Valentine Green produced a mezzotint based on the painting, a copy of which is now in the National Portrait Gallery.