Carl Georg Ferdinand Thielemann (8 March 1803 – 13 May 1863) was a Danish architect and royal building inspector during the 19th century. Thielemann was the brother of sculptors Christian and Theobald Thielemann and was born in Copenhagen. He studied architecture in 1819-20 at the Royal Danish Academy of Fine Arts under the tutelage of Christian Frederik Hansen. Thielemann was mainly taught the Neoclassical style but during the 1880s Historicism flourished and he adapted to the new style. After graduation Thielemann worked for Christian Frederik Hansen and Gustav Friedrich Hetsch as a conductor for their projects.