Shannan \sh(an)-nan\ as a boy's name (also used as girl's name Shannan), is a variant of Shannon (Gaelic), and the meaning of Shannan is "old, ancient".

The baby name Shannan sounds like Shannen and Shanan. Other similar baby names are Cannan, Chanan, Chandan, Channon, Shayan, Kannan, Shaan, Shann, Shandon, Shanahan, Shanon, Shanen, Shawnn and Tannan.