A survey was conducted on qualitative and quantitative composition of the helminth fauna of the lake frog, Rana ridibunda, in Ferghana Valley, Uzbekistan. Data were collected on the level of infection and its intensity, places and time of findings, index of abundance for 26 helminth species; 10 species of trematodes, 3 species of cestodes, 4 species of acanthocephalans, and 9 species of nematodes. Brief descriptions and drawings are provided for five helminth species first reported from Uzbekistan.