McKay \m(c)-kay\ as a boy's name (also used as girl's name McKay), is a variant of Mc- (Scottish, Irish). See for meaning of McKay.
The baby name McKay sounds like McCoy, Mac, Mackey, Maccoy, MacCoy, McGee, Micah, Mycah, Mikey, Miky, Micky, Mickey, Micha and Makai. Other similar baby names are Kay, McKade and Moray.