Adolf Láng (born Adolf Lang; 15 June 1848 – 2 May 1913), was a Hungarian-German architect, one of the main representatives of the historicist style during the late 1900s.

Lang studied in Vienna and from 1870 became the director of works for the company which built the boulevards and ring roads in Budapest. He also designed a number of private and public buildings for the capital, and later taught in Bucharest. Upon his return to Hungary, he entered into a partnership with Antal Steinhardt and spent his final years in Vienna.

• Old Music Academy, Budapest
• Old Exhibition Hall, Budapest
• National Theatre of Pécs, 1893–95
• Former Hungarian (Magyar) Theatre, 1897
• National Theatre Košice, 1899
• Pécs City Hall, 1907