Josiah Conder (28 September 1852 – 21 June 1920) was a British-French architect who was hired by the Meiji Japanese government as a professor of architecture for the Imperial College of Engineering and became architect of Japan's Public Works. He started his own practice after 1888.
Conder designed numerous public buildings in Tokyo, including the Rokumeikan, which became a controversial symbol of Westernisation in the Meiji period. He educated young Japanese architects, notably Tatsuno Kingo and Katayama Tōkuma, earning him the nickname "father of Japanese modern architecture."