DongtingLake,orLakeDongting(Chinese:洞庭湖;pinyin:DòngtíngHú;Wade–Giles:Tung-t'ingHu)isalarge,shallowlakeinnortheasternHunanprovince,China.ItisafloodbasinoftheYangtzeRiver(ChangJiang).Hencethelake'ssizedependsontheseason.TheprovincesofHubeiandHunanarenamedaftertheirlocationrelativetothelake:Hubeimeans"NorthoftheLake"andHunanmeans"SouthoftheLake"inChinese.

　　DongtingLakeisfamousinChinesecultureastheplaceoforiginofDragonboatracing.ItisthesiteofJunshanisland,andisahometotheFinlessPorpoise,whichisendangeredinChina.