Hardon \ha(r)-don\ as a boy's name is a variant of Harden (Old English), and the meaning of Hardon is "valley of the hares".

The baby name Hardon sounds like Hardin, Harding, Hardwin, Hardwyn, Hardwen and Horton. Other similar baby names are Bardon, Cardon, Hadon, Haddon, Harmon, Haydon, Mardon and Vardon.