Updated February 1, 2024 Share: Table of contents Boy name origins & meanings Norse : A wise leader Latin : Ruler Boy name variations Ragnar Rayner Raynor Rainier Raner How Popular Is The Name Rainer Family name origins & meanings Variant spelling of the English family name Rayner, or variant of the French cognate Rainier. German : variant of Reiner. Appears on 100 Boy Names That Mean Warrior (With Their Origins)