One drop may refer to:
One Drop Foundation, a non-profit organization that advocates for equal access to water Big One for One Drop, a poker tournament featuring the largest buy-in events One drop rhythm, a rhythmic pattern used in reggae music and related styles One-drop rule, a law in the antebellum South that stated that a person with any African ancestry was considered black
Songs "One Drop" (Bob Marley & The Wailers song) "One Drop" (KAT-TUN song) "One Drop", a 2012 single by Public Image Ltd. "One Drop", a song by Plumb on Need You Now (Plumb album)