Marc Hideo Miyake (三宅 英雄, Miyake Hideo; born July 28, 1971) is an American linguist who specializes in historical linguistics, particularly the study of Old Japanese and Tangut.

Miyake was born in ʻAiea, Hawaii, in 1971, and attended Punahou School in Honolulu, graduating in 1989. He studied Japanese language and literature at University of California, Berkeley, and then studied linguistics at the University of Hawaii at Manoa, earning his doctorate in 1999 under Alexander Vovin, with a dissertation entitled The Phonology of Eighth-Century Japanese Revisited: Another Reconstruction Based upon Written Records. He is best known for his work on the phonetic reconstruction of Old Japanese, but is also known for his work on the extinct Tangut language.^{[citation needed]}

Between 2015 and 2019, Miyake was a research assistant at the British Museum, working on the decipherment of Pyu inscriptions. At the same time he was also a research associate in the Department of Linguistics at the School of Oriental and African Studies.