Gillermo

Gillermo is a masculine name representing a variation of the more common Guillermo, which is the Spanish form of William. The name ultimately derives from Germanic elements "wil" (will, desire) and "helm" (helmet, protection), conveying a meaning of "resolute protector" or "determined guardian." This particular spelling with a 'G' instead of 'Gu' is less common but phonetically similar. Gillermo carries the cultural richness of Hispanic heritage while offering a slightly different visual presentation. The name remains relatively uncommon in English-speaking countries but has presence in Spanish-speaking communities. Those named Gillermo often appreciate its connection to the widely recognized classic William while maintaining distinctive cultural ties.

Pronounced gee-YER-moh.

As of October 2026, Gillermo ranked #12944 for boys in US births in 2011 SSA, peaked at #2193 for boys in 1972.