Thomas Campbell was a Scottish sculptor in the early 19th century. He has several important public works, most notably a statue of Sarah Siddons in Westminster Abbey. He also has several works in the National Gallery in London. He was heavily patronised by the British aristocracy, as evidenced by his works.

Sarah Siddons was a Welsh actress, the best-known tragedienne of the 18th century. Contemporaneous critic William Hazlitt dubbed Siddons as "tragedy personified".