關門砬子水庫係中國吉林省吉林市樺甸市境內一個水庫，喺輝發河上遊，1973年起嘅。水庫正常庫容係300萬立方米。
Guanmen Hoof Reservoir is a reservoir in Huadian City, Jilin City, Jilin Province, China, in the upper reaches of the Huifa River, since 1973. The normal storage capacity of the reservoir is 3 million cubic meters.