Diamond Valley may refer to: __NOTOC__
Places Australia Diamond Valley, Queensland, a rural locality Division of Diamond Valley, Victoria Shire of Diamond Valley, a former local government area in Victoria
Canada Diamond Valley, Alberta, a town formed via the amalgamation of the towns of Black Diamond and Turner Valley
United States Diamond Valley (California), a valley in the Plains of Leon in Riverside County, California Diamond Valley Lake, a reservoir in Riverside County, California Diamond Valley (Nevada) Diamond Valley (Washington County, Utah)
Other uses Diamond Valley College, a public co-educational school in Diamond Creek, Victoria, Australia Diamond Valley United SC, a soccer club based in Greensborough, Victoria Diamond Valley Football League, former name of the Northern Football Netball League, Diamond Creek, Victoria Diamond Valley Railway, a ridable miniature railway at Eltham Lower Park, Eltham, Victoria Motu Patlu & The Race to The Diamond Valley, an Indian animated TV film based on the animated TV show Motu Patlu