Fawnus \fa(w)-nus\ as a boy's name is a variant of Faunus (Latin), and the meaning of Fawnus is "animal".

The baby name Fawnus sounds like Fons, Fonzo, Fonz, Phons, Phauns, Fonso, Fineas and Vance. Other similar baby names are Fabius, Janus and Manus.