A Quaker is a term used to describe members of the Religious Society of Friends, a historically Christian denomination.

Quaker may also refer to:

• Quaker Oats Company, a U.S. food company
  • Cuáker, an Ecuadorian beverage made from oats (a loanword of "quaker")
• Quaker (coffee), a term used in coffee roasting to denote an unripe or poorly roasted coffee bean, the number of which is often used to judge the quality of a batch of coffee

• Quaker butterfly (Neopithecops zalmora)
• Quaker lady (disambiguation), name given to several flowers
• Quaker parrot, also known as the monk parakeet (Myiopsitta monachus)
• Quaker, one of several names for Dissosteira carolina, also known as the Carolina grasshopper

• Quaker State, a former motor oil manufacturer

• Bernard Barton (1784-1849), sometimes referred to as "The Quaker Poet"
• John Greenleaf Whittier (1807-1892), nicknamed "The Quaker Poet"
• See List of Quakers

• Quaker, Indiana (or Quaker Point), an unincorporated community in Vermillion County, Indiana
• Quaker, Missouri, an unincorporated community
• Pennsylvania, sometimes called "The Quaker State"
• Quakers Hill, New South Wales, a suburb in Sydney, Australia

• Quakers, the nickname of Darlington F.C. in the north of England and many other businesses in Darlington
• Quakers, the nickname for the athletic teams of Earlham College
• Quakers, the nickname for the athletic teams of Guilford College
• Quakers, the nickname for the athletic teams of Orchard Park, New York
• Quakers, the nickname for the athletic teams of Salem, Ohio
• Penn Quakers, the athletic teams of the University of Pennsylvania
• Philadelphia Quakers, a defunct National Hockey League team

• Quakers (band), a hip-hop supergroup
• Quaker, a player of the video game Quake
• "Quaker", a song by the American band Bright from the album The Albatross Guest House

• Quake (disambiguation)
• Quackers, a puppet who appeared with Ray Alan
• All pages with titles containing Quaker

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