The marsh frog (Pelophylax ridibundus), a frog in the family Ranidae, is the largest frog native to Europe.
Marsh frog may also refer to:
Barking marsh frog (Limnodynastes fletcheri), a frog in the family Myobatrachidae native to southeastern Australia Greek marsh frog (Pelophylax kurtmuelleri), a frog in the family Ranidae found in Greece, Albania, Montenegro, and Serbia Montane marsh frog (Poyntonia paludicola), a frog in the family Pyxicephalidae endemic to Western Cape, South Africa Spotted marsh frog (Limnodynastes tasmaniensis), a frog in the family Myobatrachidae native to southeastern Australia including Tasmania Striped marsh frog (Limnodynastes peronii), a frog in the family Myobatrachidae native to coastal eastern Australia Western marsh frog (Heleioporus barycragus), a frog in the family Myobatrachidae endemic to Australia