Theobald Stein (7 February 1829 – 16 November 1901) was a Danish sculptor.
He was a professor at the Royal Danish Academy of Fine Arts and served as its director from 1883 to 1886.
Among his most well-known works are the Niels Juel statue at Holmens Kanal and the Ludvig Holberg statue outside the Royal Danish Theatre, both in Copenhagen.