This is a list of surnames in which the usage is English; and the first letter is O.
Oakley EnglishFrom a place name meaning "oak clearing" in Old English. It was borne by American sharpshooter Annie Oakley (1860-1926).
Odell EnglishOriginally denoted a person who was from Odell in Bedfordshire, derived from Old English
wad "woad" (a plant that produces a blue dye) and
hyll "hill".
Overton EnglishDenoted a person who hailed from one of the various places in England called Overton, meaning "upper settlement" or "riverbank settlement" in Old English.
Owston EnglishDenoted a person who came from any one of the places in Britain called Ouston or Owston.