Lonn \l(o)-nn\ as a boy's name is a variant of Lonnie (English) and Lunn (Irish, Gaelic), and the meaning of Lonn is "strong, warlike".

The baby name Lonn sounds like Lonny, Lon, Lenn, Linn, Lynn and Lonne. Other similar baby names are Conn, Donn, Jonn, Long, Lorn, Ronn and Vonn.