Joyce \jo(y)-ce\ as a girl's name is pronounced joyce. It is of Latin origin, and the meaning of Joyce is "lord". From the Norman male name Josce or Josse, which is from Jodocus, a Latin form of a Breton name, Iodoc, borne by a seventh-century Breton saint. Used in the Middle Ages. Its use as a girl's name from the 16th century among Puritans suggests it have been associated with the vocabulary word "joy". Advice columnist Dr. Joyce Brothers; writer Joyce Carol Oates.
For more information, see also the related name Jocelyn.