Resolute protector
Guillermo is the Spanish form of William. It is derived from the Germanic name Willahelm, which combines the elements 'wil' meaning desire or will and 'helm' meaning helmet or protection.
About 264 boys were named Guillermo in 2025.
US births per 5-year period, 1990–present (SSA data).
Academy Award-winning film director
Mexican professional footballer
Argentine tennis player and Grand Slam champion
American actor known for the series Scandal
Vampire familiar and bodyguard · What We Do in the Shadows
The same feel as Guillermo — far less common.
Hidden gems that stand out.
