Killean \k(il)-lean\ as a boy's name is a variant of Killian (Irish, Gaelic), and the meaning of Killean is "bright-headed".

The baby name Killean sounds like Gillean and Kilean. Other similar baby names are Ailean, Cillian, Dillen, Dillan, Gillian, Gilleon, Gillen, Gillan, Gilean, Kellen, Keillan, Kellan, Kilian and Millen.