Malachy \m(a)-la-chy\ as a boy's name is a variant of Malachi (Hebrew), and the meaning of Malachy is "messenger of God".

The baby name Malachy sounds like Malechy and Malachie. Other similar baby names are Malakie, Malakia, Malaki, Malak, Mallory, Malory, Mallery, Manoach, March, Melacio and Wallach.