沼蛙（学名：Hylarana guentheri）为蛙科蛙属的两栖动物。

沼蛙长约7厘米，棕色背面，沿背侧褶有黑色纵纹，体侧有黑斑，后肢有黑色横斑，白色腹面；口角后有两个浅色颌腺；雄蛙在咽侧下有外声囊一对，上臂基部有肾形大臂腺，指垫不显着；趾间有蹼。

Günther's frog (Hylarana guentheri) is a species of frog in the Ranidae family. It was formerly placed in the genus Rana. It is found in China, Hong Kong, Macau, ******, Vietnam, and possibly Cambodia and Laos. An introduced population is found on Guam. An alternate common name is Günther's Amoy frog, and the honorific is often spelled "Guenther's".