Hamill \ha-mi-ll\ as a boy's name is of Old English origin, and the meaning of Hamill is "scarred". May refer to the facial feature of an ancestor. Actor Mark Hamill, newspaper editor Pete Hamill. Hamill has 3 variant forms: Hamel, Hamell and Hammill. For more information, see also the related name Hamilton. Baby names that sound like Hamill are Hamil, Hamal and Hamahl. View a list of the 2 names that reference Hamill.