厄利斯（希腊语：Ήλιδα Ilida；古希腊语：Ἦλις Ēlis）也作埃利斯、伊利斯或爱丽斯，是古希腊伯罗奔尼撒半岛西北部一个地区及城邦，以养马和古代奥林匹克运动会而闻名于世。

厄利斯地区北临亚该亚，东接阿卡迪亚，南为美塞尼亚。整个地区从北到南分为三部分：科依列（古希腊语：Κοίλη Koilē）或低地厄利斯、厄利斯谷，指皮尼奥斯河流域地区；皮斯阿提斯（古希腊语：Πισᾶτις Pīsātis）或比萨，指阿尔菲奥斯河北岸地区；特菲利亚（古希腊语：Τριφυλία Triphūlia ），指阿尔菲奥斯河南岸至美塞尼亚北部边界的丘陵地带。整个厄利斯地区降水丰富，拥有优良的牧场和耕地，以饲养马、牛和种植亚麻而闻名于世。

Elis /ˈɛlᵻs/ or Eleia /ɛˈlaɪ.ə/ (Greek, Modern: Ήλιδα Ilida, Ancient: Ἦλις Ēlis; Doric: Ἆλις Alis; Elean: Ϝαλις Walis, ethnonym: Ϝαλειοι) is an ancient district that corresponds to the modern Elis regional unit. Elis is in southern Greece on the Peloponnesos peninsula, bounded on the north by Achaea, east by Arcadia, south by Messenia, and west by the Ionian Sea. Over the course of the archaic and classical periods, the polis of Elis controlled much of the region of Elis, most probably through unequal treaties with other cities, which acquired perioikic status. Thus the city-state of Elis was formed.