Sleven \s-le-ven\ as a boy's name is a variant of Slavin (Irish, Gaelic), and the meaning of Sleven is "mountain man".

The baby name Sleven sounds like Sylvan, Silvan and Sullevan. Other similar baby names are Steven, Alven, Clevon, Elven, Stevan, Stevyn, Stevon and Sven.