Guillermo
Meaning of Guillermo
Guillermo (pronounced gee-YAIR-moh in Spanish and gee-YAIR-moo in Portuguese) is the Iberian cousin of William, distilled from the Old Germanic Wilhelm, “will” plus “helm,” or, in plain terms, “resolute protector.” First recorded in medieval Castile, the name traveled with explorers and settlers, becoming a mainstay from Madrid to Mexico City and Buenos Aires. In the United States it has charted steadily for more than a century—rarely flashy, yet reliably present—hovering between the mid-200s and mid-600s in Social Security rankings and signaling a quiet but enduring link to Latino heritage. Cultural touchstones span fields: Oscar-winning filmmaker Guillermo del Toro, Argentine tennis legend Guillermo Vilas, Mexican goalkeeper Guillermo “Memo” Ochoa, and Ecuador’s president Guillermo Lasso all underscore the name’s range and credibility. With a meaning that blends steadfast will and protective strength, Guillermo offers parents a time-tested choice that resonates in both Spanish- and English-speaking worlds without losing its distinctly Latin cadence.
Pronunciation
Spanish
- Pronunced as gee-YAIR-moh (/ɡiˈʝeɾmo/)
Portuguese
- Pronunced as gee-YAIR-moo (/ʒi.ˈʒeɾ.mu/)
U.S. Popularity Chart
States Popularity Chart
Notable People Named Guillermo
| Guillermo del Toro is a Mexican filmmaker celebrated for pioneering dark fantasy with horror, fairy tales, and beauty in the grotesque. |
| Guillermo Ochoa - Memo Ochoa is a Mexican professional goalkeeper who plays for Cypriot club AEL Limassol and the Mexico national team. |
| Guillermo Gonzalez is a Cuban-born American astronomer at the University of Alabama who advocates for intelligent design through his roles at the Discovery Institute. |
| Guillermo Vilas is an Argentine tennis legend who was world No. 1 and won four major singles titles. |
| Guillermo Barros Schelotto is an Argentine football manager and former forward currently leading Vélez Sarsfield. |
| Guillermo Amor Martínez was a versatile Spanish midfielder. |
| Guillermo Díaz is an American actor best known for his role as Diego "Huck" Muñoz in the TV series Scandal. |
| Mexican astronomer Guillermo Haro Barraza advanced modern observational astronomy in his country and is famed for his role in discovering Herbig–Haro objects. |
| César Guillermo Castillo Reyes served as Guatemala's 17th vice president from 2020 to 2024. |
| Guillermo Arriaga Jordán is a Mexican novelist and screenwriter acclaimed for his Oscar-nominated work on Babel and his Cannes-winning screenplay for The Three Burials of Melquiades Estrada. |
| Guillermo Antonio Ameer is a distinguished biomedical engineering professor at Northwestern University and a fellow of multiple prestigious scientific societies. |
| Guillermo Ríos Alcalá is a Mexican potter, restoration expert, and educator from Colima. |
| Guillermo Ortelli is an Argentine race car driver competing in domestic series with seven Turismo Carretera titles. |
