Cathy \c(a)-thy\ as a girl's name is pronounced KATH-ee. It is of Greek origin, and the meaning of Cathy is "pure". Pet form of Catherine amd Catharine. See also Kathy.

Cathy has 5 variant forms: Cath, Cathi, Cathia, Cathie and Kathy.

For more information, see also the related name Katherine.

Baby names that sound like Cathy are Caty, Cathye, Cathe, Catha and Catey.