Halley \ha(l)-ley\ as a girl's name (also used as boy's name Halley), is a variant of Hallie and Haralda (Old Norse), and the meaning of Halley is "army ruler, commander".

The baby name Halley sounds like Haley, Hayley, Hailey, Halle, Hally, Haeley and Holley. Other similar baby names are Calley, Kalley, Hadley, Harley, Salley, Talley and Valley.