Hallsey \ha-ll-sey\ as a boy's name is a variant of Halsey (Old English), and the meaning of Hallsey is "Hal's island".

The baby name Hallsey sounds like Hallsy and Halsy. Other similar baby names are Halley, Hallen, Haley, Hayley, Hallie, Hailey, Hallem, Halle and Hawley.