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

The baby name Shannen sounds like Shannan and Shanen. Other similar baby names are Channon, Channe, Shane, Kannen, Shann, Shandon, Shandey, Shayne, Shaine, Shanley, Shannley, Shanon, Shanan, Shawnn, Shawnel, Shawnee, Shawney and Tannen.