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

The baby name Gaer sounds like Carr, Ker, Karr, Geir, Gary, Garry, Garey, Gari, Gery, Gere, Gower, Grey, Gur and Keer. Other similar baby names are Gael, Barr, Bar, Baker, Caerd, Cael, Dar, Farr, Gaby, Gabi, Gabe, Gab, Gad, Gadi, Gale, Gage, Gal, Gail, Gaell, Gall, Galo, Gard, Gared, Garek, Garen, Gayler, Gay, Gayner, Gainer, Gomer, Greg, Greer, Jair, Kael, Marr, Mar, Maier, Ner, Parr, Per, Par, Peer, Rae and Yaar.