Updated February 29, 2024 Share: Table of contents Boy name origins & meanings Latin : Ruler Boy name variations Rainer Rainer - 17% this year Masculine Rare Find out more Raner Raner 0 % this year Masculine Rare Find out more How Popular Is The Name Rainier Family name origins & meanings French : from a personal name composed of the Germanic elements ragin ‘advice’ + hari, heri ‘army’. Appears on 100+ Elf Names for Your Baby (Or D&D Character!)