Tienan \ti(e)-nan\ as a boy's name is a variant of Tynan (Irish, Gaelic), and the meaning of Tienan is "dark, dusty".

The baby name Tienan sounds like Tannan, Donnan, Tannon, Tannen, Tannin, Tynon, Tynnin, Tynnen, Tynin and Tynen. Other similar baby names are Kienan and Tiernan.