Tadevos Hakobyan (Armenian: Թադևոս Հակոբյան; 15 June 1917 – 15 October 1989) was a Soviet Armenian historian and geographer.
Hakobyan was born in Lernadzor village in Armenia's southern province of Syunik. In 1940 he graduated from the Faculty of Geography-Geology of the Yerevan State University (YSU). He was the dean of the YSU's Faculty of Geography in 1955-57 and 1963-65. He thereafter served as the chair of that department between 1962 and 1986. Most of his work was focused on the historical geography of Armenia. He also authored several textbooks.
Սյունիքի թագավորությունը: Պատմա-աշխարհագրական առումով [The Syunik Kingdom in Historical-Geographical Context] (in Armenian). Yerevan: Mitk'. 1966. Հայաստանի պատմական աշխարհագրություն [Historical Geography of Armenia] (in Armenian). Yerevan: Mitk'. 1968. Очерк истории Еревана [Outline of the History of Yerevan] (in Russian). Yerevan: Yerevan University Press. 1977. Հայ ժողովրդի պատմության հիշարժան վայրերը [Memorable locations of the history of the Armenian people] (in Armenian). Yerevan: Luys. 1978. Անիի պատմություն [History of Ani] (in Armenian). Yerevan: Yerevan University Press. 1980. Ани - столица средневековой Армении. История и судьба городища [Ani: The capital of medieval Armenia. The history and destiny of the settlement] (in Russian). Yerevan: Yerevan University Press. 1985. Պատմական Հայաստանի քաղաքները [Cities of historic Armenia] (in Armenian). Yerevan: Hayastan. 1987. Անի մայրաքաղաք [Ani the capital] (in Armenian). Yerevan: Yerevan University Press. 1988. 
