努曼西亚（西班牙语：Numancia）是一座消失了的凯尔特伊比利亚城市。遗址位于如今的西班牙索里亚（Soria）以北的加来伊（Garray），穆尔拉山（el Cerro de la Muela）。

努曼西亚因其在凯尔特伊比利亚战争中与罗马共和国的对抗而为人熟知。公元前153年，由于努曼西亚收留了一些来自塞戈达（Segeda）的贝罗（bello）部落的难民，它与罗马入侵者发生了第一次严重的冲突。在卡洛·德塞戈达的指挥下，成功击溃了由罗马执政昆图斯·富尔维乌斯·诺比利奥尔（Quinto Fulvio Nobilior）率领的三万大军。但卡洛本人在战斗中不幸牺牲。

Numantia (Numancia in Spanish) was an ancient Celtiberian settlement, whose remains are located 7 km north of the city of Soria, on a hill known as Cerro de la Muela in the municipality of Garray.

Numantia is famous for its role in the Celtiberian Wars. In the year 153 BC Numantia experienced its first serious conflict with Rome. After 20 years of hostilities, in the year 133 BC the Roman Senate gave Scipio Aemilianus Africanus the task of destroying Numantia. He laid siege to the city, erecting a nine kilometre fence supported by towers, moats, impaling rods and so on. After 13 months of siege, the Numantians decided to burn the city and die free rather than live and be slaves.