Issy \i(s)-sy\ as a girl's name (also used as boy's name Issy), is a variant of Isabel (Hebrew), and the meaning of Issy is "God's promise".

The baby name Issy sounds like Essy, Assi, Assa, Izzy, Issie, Isa, Jessy and Josy. Other similar baby names are Kassy, Cassy, Nessy, Isha, Lesy, Bessy, Casy, Kasy, Sissy, Sessy, Lissy, Ilse, Ilsa, Isme, Isla, Isis, Islay, Ivy, Ivey, Kessy, Missy, Rosy, Cissy, Susy and Tessy.