鸡龙山（韩语：계룡산）是位于大韩民国忠清南道大田广域市的一座海拔845m的山。在1968年被指定为鸡龙山国立公园。

鸡龙山是数个岩峰的总称，最高峰为天皇峰。其它山峰有观音峰、神仙峰、三佛峰等。有着瀑布、溪流、大量奇岩等风光明媚的自然环境，现为一处登山观光地。

山临百济旧都公州，古来便为名山，是统一新罗的五岳中之西岳。鸡龙山周围建有许多佛寺，特别著名的有西侧登山口的甲寺和东侧登山口的东鹤寺（尼寺）。有李朝时代的窑址鸡龙山窑遗址、鸡龙山温泉等。南麓为鸡龙市，是**海陆空三军本部基地鸡龙台所在地。

鸡龙山一带在1968年被指定为鸡龙山国立公园。

Gyeryongsan, a 845 m (2,772 ft) mountain in Chungcheongnam-do, South Korea. It lies at the meeting of the boundaries of several cities: Gongju, Gyeryong, Nonsan, and Daejeon. It has been traditionally regarded as a sacred mountain, with the most qi of any in South Korea. The name Gyeryongsan means chicken dragon mountain Portions of the mountain are included in a South Korean military reserve. Other portions are part of Gyeryongsan National Park. In the mountain, there are famous Buddhist temples such as Donghaksa, Gapsa and Sinwonsa, the latter two both being over a thousand years old. In addition the highest peak, Cheonhwangbong, there are seven other peaks with an elevation exceeding 500m