Hemicyon, also known as the "dog-bear" (literally "half dog", from Greek ἡμι- hēmi- (half) + κύων kúōn (dog)), is an extinct genus of hemicyonine bear, which probably originated in Eurasia but was found in Europe, Asia and North America during the Miocene epoch (15.97 to 12.75 million years ago), existing for approximately 16 to 13 mya.

[4] Other Hemicyon fossil finds include: H. teilhardi from the Middle Miocene Hujialian Formation in the Linxia Basing, Gansu Province, China; an Early Miocene Hemicyon from Lanzhu Basin Shan Mong fauna, China; Hemicyon of the Mid-Miocene Dongxiang and Laogou Formation in Linxia Basin on the northeast margin of the Tibetan Plateau; Mid-Miocene H. sansaniensis of Arroyo del Val area, Villafeliche, Zaragoza Province, Spain; Mid-Miocene H. mayorali of Tarazona de Aragon, Spain; a Hemicyon found at the Somosaguas site, Pozuelo de Alarcón, Madrid; H. sansaniensis from the Mid-Miocene Anchitherium fauna of İnönü locality, NW Ankara; a Lower Miocene (Eggenburgian-Ottnangian: ca.

20 Ma) H stehlini found in the coal bed of Banovići Basin, Bosnia; an Early Hemingfordian hemicyonid (ca.

16 Ma) from the Pollack Farm Fauna, Delaware; and an excellent Hemicyon specimen from the Miocene Santa Fe Formation, New Mexico.

Hemicyonidae fossil evidence may also have been found in the Gaillard Cut Local Fauna, former Canal Zone, Republic of Panama, but it is indeterminant with Amphicyonidae.