William Agnew

William or Billy Agnew may refer to:


 * Sir William Agnew, 1st Baronet (1825–1910), English politician
 * William Agnew (footballer) (1880–1936), Scottish footballer (national team)
 * Billy Agnew (1898–?), Scottish footballer (Port Vale, Luton Town)
 * Sir William Agnew (Royal Navy officer) (1898–1960), British admiral