Meaning & Origin
A diminutive of the female given name Matilda, also used as a formal given name
Mattie is a girl's and boy's baby name of Germanic origin, a diminutive of Matilda, from the Old High German Mahthildis, meaning 'strength in battle.' While long used as a nickname, Mattie functioned as a standalone name through the 19th and early 20th centuries.
Mattie was a top-100 U.S. name around 1900 and is now resurging alongside the broader vintage revival. The Coen Brothers' True Grit gave it a feisty, frontier heroine association that modern parents love.