Collis \c(ol)-lis\ as a boy's name (also used as girl's name Collis), is a variant of Colley (Old English) and Collier (Old English), and the meaning of Collis is "dark-haired; coal miner".

The baby name Collis sounds like Callis and Colis. Other similar baby names are Collie, Collin, Collins and Hollis.