Byles is an English surname (spelling variations Biles, Boyles, Billes, Bailie, Bill and others) and/or transliteration of the Gaelic O'Boyles. People with that name include:
Axtell J. Byles (1880–1941), American college football player and coach, lawyer and business executive
Dan Byles (born 1974), British politician, ocean rower and polar explorer
Gary Byles, contemporary Australian Army officer
Janice Byles (born 1944), later Janice Meek, ocean rower and polar explorer
John Barnard Byles (1801–1884), British barrister
Junior Byles (1948–2025), Jamaican reggae singer
Marie Byles (1900–1979), conservationist, solicitor and author
Mather Byles (1706–1788), British North American clergyman
Mather Byles (loyalist) (1734/5–1814), Congregational cleric in Connecticut Colony
Thomas Byles (1870–1912), British Catholic priest, passenger on the RMS Titanic
Walter Byles (1840–1921), English barrister and cricketer, son of John Barnard Byles
William Byles (1839–1917), British newspaper owner and Liberal politician
