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

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