Casidy \c(a)-si-dy\ as a girl's name is a variant of Cassidy (Irish, Gaelic), and the meaning of Casidy is "curly-headed".

The baby name Casidy sounds like Kasidy, Kassidy, Cassity, Cassidi, Cassidey, Cassiddy, Cassady and Casidee. Other similar baby names are Chasidy, Cassy, Casey, Cady, Caity, Calida, Candy, Caddy, Casy, Cassey, Casie, Casi, Cascy, Casilda, Chasity, Chassidy, Chasady and Chasida.