Mother's milk is milk produced by mammary glands located in the breast of a human female to feed a young child.

Mother's Milk may also refer to:

Entertainment

• Mother's Milk (album), an album by Red Hot Chili Peppers
  • Mother's Milk Tour, 1989–1990 worldwide concert tour
• Mother's Milk (novel), by Edward St Aubyn
• Mother's Milk (film), 2011
• "Mother's Milk" (Law & Order), an episode of the television series Law & Order
• Mother's Milk (character), a character in comic book and television series The Boys
• Mother's Milk, a predecessor of American rock band Boston