Sedad Hakkı Eldem (31 August 1908 – 7 September 1988) was a Turkish architect and proponent of nationalized modern architecture in Turkey.

[citation needed] In 1932, he opened his own office and started teaching at the Academy of Fine Arts, continuing until his retirement in 1978.

He was a part of the Former Artifacts Maintaintenance Council (Eski Eserleri Muhafaza Encümeni) between 1941 and 1945 and also a part of the Supreme Council of Antiquities and Monument Real Estate (Gayrimenkul Eski Eserler ve Anıtlar Yüksek Kurulu) between 1962 and 1978.

He believed that the international style of architecture should not be applied uniformly everywhere, and that some aspects should be changed, taking the national and domestic texture into account.

[citation needed] He won the international Aga Khan Award for Architecture in 1986 for the Zeyrek Social Security Facilities.