Emin Halid Onat (1908–1961), was a Turkish architect and former rector of Istanbul Technical University.

Onat was born in Istanbul in 1908. He entered Istanbul Technical University in 1926. Then, he was sent to Zurich Technical University. Onat was one of the architects of Anıtkabir, the mausoleum of Mustafa Kemal Atatürk. His architectural style was formed at ETH. Emin Onat learned to experiment, interpret and search for modernism from his teacher Otto R. Salvisberg, a well-known, experienced practicing architect. Despite getting under the Anıtkabir’s shadow, he has a unique architectural style.