Geir \geir\ as a boy's name is a variant of Gair (Irish, Gaelic), and the meaning of Geir is "small one".

The baby name Geir sounds like Keir, Kerr, Ker, Gaer, Geary, Gery, Gerry, Gerri, Gere, Gur, Jair and Keer. Other similar baby names are Meir, Bear, Gene, Geno, Genio, Georg, Gerik, Gil, Gib, Meiri, Meier, Muir, Ner, Per, Peer, Rei and Ymir.