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Guillermo

Boy's name · #902 in the US (2025) · 90s wave

Popularity over time

Guillermo reached #352 in 1996 and has eased to #902 since. About 32,000 boys have carried it since 1885.

Across the states

See where Guillermo is more common.

Appears in 2020-2025 birth records of 12 states. See the full state-by-state map on this page.

Around the world

See how Guillermo ranks in other countries and regions.

#48 in Spain (2024) · #184 in Mexico (2024) · #253 in Puerto Rico (2025) · #336 in Ecuador (2025).

Famous Guillermos

• Guillermo Lasso — 55th President of Ecuador from 2021 to 2023
• Guillermo del Toro — Mexican filmmaker and author (born 1964)
• Guillermo Ochoa — Mexican association football player (born 1985)
• Guillermo Stábile — Argentine football player and manager
• Guillermo Vilas — Argentine tennis player

In stories & tradition

• Guillermo Almada — Graduados (TV series)
• Guillermo Venegas Jr. — Los Venegas (TV series)
• Guillermo — Adventure Time (TV series)

What Guillermos become

Among 1,975 notable people named Guillermo:

Lawyers & judges appear 1.51× more often than among typical names — e.g. Guillermo Botero Nieto, Colombian lawyer (born 1948).

Similar names: Billy · Salvador · Jeronimo · Ernesto · Gerardo · Gustavo

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.

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