Isaia \i-saia\ as a boy's name is a variant of Isaiah (Hebrew), and the meaning of Isaia is "salvation of God; the Lord helps me".

The baby name Isaia sounds like Isia and Isais. Other similar baby names are Iain, Ilia, Isaac, Isak, Isac, Isaak, Isa, Izaiah, Issiah, Isiah, Isam and Itai.