Cathrynn \c(a)-thry-nn, cath-rynn\ as a girl's name is a variant of Catherine (Greek) and Katherine (Greek), and the meaning of Cathrynn is "pure".

The baby name Cathrynn sounds like Cathryne, Cathryn, Cathrinn and Kathrynn. Other similar baby names are Kathryne, Kathryn, Katherynn, Catryna, Cathrine, Cathlyne, Cathiryn, Catheryn, Catherinn, Catharyne, Carynn, Kathirynn, Catharyna and Kathlynn.