The Valdons (often misspelled "Waldons") were a Minneapolis soul and funk vocal group formed in the 1960s, whose members included singers William Clark, Clifton Curtis, Napoleon Crayton, Willie Walker and Monroe Wright III. Accompanied by musicians from the Navajo Train, The Valdons became one of the leading acts on the Twin Cities soul scene in the late 1960s and early 1970s, blending smooth vocal harmonies with funk rhythms. Their best-known track is the rare 1971 single "All Day Long", which subsequently acquired cult status among soul collectors and was rediscovered through reissues. In 2026, a new edition of the single reached number 88 in the UK singles chart.