Guinness is a surname of Irish origin. Guinness (drink) is also a famous Irish brand of beer.

Look up Guinness in Wiktionary, the free dictionary.

It may also refer to:

• Guinness Brewery, Dublin, Ireland
• Guinness Mahon, a merchant bank
• Guinness Peat Aviation, an aircraft leasing company
• Guinness Peat Group, an investment holding company

• Guinness (surname)
• Guinness family, descendants of Arthur Guinness and his brother Samuel Guinness

• Guinness GAA, a former Gaelic Athletic Association club
• Guinness Premiership, a rugby union competition, sponsored by Guinness between 2005 and 2010

• Guinness World Records, a reference book
• Guinness baronets, titles
• The Guinness Partnership, a housing association and charity

• Guinness-on-Sea

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