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 south of the USA before the USA Civil War 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)

This disambiguation page lists articles associated with the title One drop.
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