Byerly is a surname. Notable people with the surname include:
Alice Sudduth Byerly (1855–1904), temperance activist Alison Byerly (born 1961), American educator Bud Byerly (1920–2012), American baseball player Chester Byerly (1918–1984), American politician Hayden Byerly (born 2000), American child actor Kathleen Byerly (1944–2020), United States Navy officer Perry Byerly (1897–1978), American seismologist Robert Byerly (1916–1945), American-born Canadian soldier who was a spy for the British SOE during World War II
See also Byerley Mount Byerly, Antarctic mountain named for Perry Byerly Byerly House, historic house in Pennsylvania, United States