Brian Hayes may refer to:

• Brian Hayes, former Republican Party labor policy director and member of the National Labor Relations Board in the United States
• Brian Hayes (broadcaster) (born 1937), Australian broadcaster, worked in the UK for the BBC and Independent Radio, and on Not Today, Thank You
• Brian Hayes (civil servant) (1929–2022), English civil servant
• Brian Hayes (dual player), Irish Gaelic footballer and hurler
• Brian Hayes (lawyer), South Australian lawyer
• Brian Hayes (politician) (born 1969), Irish Fine Gael politician
• Brian Hayes (producer), Australian film producer, co-producer of the 2023 film Emotion Is Dead
• Brian Hayes (rugby union) (born 1990), Irish rugby union player
• Brian Hayes (scientist), American scientist, columnist and author

• Bryan Hayes (born 1958), Canadian Member of Parliament
• Bryan Hayes (radio host) (born 1983), Canadian sports radio host