Robert Byrd (1917–2010) was a United States Senator from West Virginia.

Robert Byrd may also refer to:

• Robert Byrd (architect), American architect
• Robert Byrd (artist) (born 1942), American author and illustrator
• Robert K. Byrd (1823–1885), American soldier and politician
• Robert L. Byrd, Delaware legislator and lobbyist
• Robert Byrd, American professional boxing referee, see Floyd Mayweather Jr. vs. Conor McGregor
• Bobby Byrd (1934–2007), American musician, songwriter and record producer (The Famous Flames)
• Bobby Day (1928–1990), also known as Bobby Byrd, American musician and songwriter (The Hollywood Flames, Bob & Earl)