ESC Name Rank Total Searching... No names found Try searching for: Emma, Liam, Olivia, Noah... 1966 First Year 2006 Last Year 1991 Peak Year #9336 Peak Rank 74 Total Count 13 Years Active 🌍 ## Meaning & Origin of Guillermo What this name means, where it came from, and how it has traveled across cultures. Guillermo is the Spanish form of the male given name William. The name is also commonly shortened to Guille. Source: [Wikipedia ](https://en.wikipedia.org/wiki/Guillermo) (CC BY-SA 3.0). [Read more → ](https://en.wikipedia.org/wiki/Guillermo) ### Cultural Origins (via Behind the Name) * Spanish 📖 ## The Story of Guillermo Guillermo first appeared in U.S. Social Security Administration records as a baby boy name in 1885, with 5 babies given the name that year. The name hit its high-water mark in 1998: 693 births, good for #369 nationwide. The 1990s were its strongest decade, accounting for roughly 20% of all recorded Guillermos. In the latest 2026 data it stands at #830 among baby boy names with 300 births, holding steady (-2%). In total, more than 32K Guillermos have been born in the U.S. since records began in 1880, spanning the 1880s through the 2020s. ## Popularity Over Time ## Popularity by State ME WA MT ND MN WI MI NY VT NH MA OR ID SD IA IL IN OH PA NJ CT RI CA NV WY NE MO KY WV VA MD DE DC UT CO KS AR TN NC SC AK AZ NM OK LA MS AL GA HI TX FL Top 10 11-50 51-100 101-500 500+ No data ⭐ ## Notable people named Guillermo A small selection from Wikipedia. Tap "Read more" below to see the full list on Wikipedia. * ●Guillermo Amador (1974–), American musician * ●Guillermo Amor (1967–), Spanish footballer * ●Guillermo Arévalo (1952–), a Shipibo shaman and curandero (healer) of the Peruvian Amazon ( Shipibo : Kestenbetsa ) * ●Guillermo Barros Schelotto (1973–), Argentine footballer * ●Guillermo Bermejo (1975–), Peruvian politician * ●Guillermo C. Blest (1800–1884), Anglo-Irish physician settled in Chile * ●Guillermo Cañas , Argentine tenniser * ●Guillermo Cañedo , Mexican businessman Source: [Wikipedia ](https://en.wikipedia.org/wiki/Guillermo) (CC BY-SA 3.0). [Read more → ](https://en.wikipedia.org/wiki/Guillermo) 🎶 ## Names that sound like Guillermo Phonetically similar names — useful when Guillermo is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name. * Gillion * Grillion * Aguilera * Calero * Galleri * Cajero * Squillions * Salguero * Silguero Source: [Datamuse ](https://www.datamuse.com/api/). Phonetic similarity ranking, not curated. ❓ ## Frequently Asked Questions about Guillermo What does the name Guillermo mean? Guillermo is the Spanish form of the male given name William. The name is also commonly shortened to Guille. What is the origin of the name Guillermo? Guillermo has roots in the following cultural and linguistic traditions: Spanish. How popular is Guillermo in 2026? In 2026, Guillermo ranks #830 among boys' names in the U.S., with 300 babies given the name that year. When was Guillermo most popular? Guillermo reached its peak popularity in 1998, ranking #352 that year with 693 babies given the name. In which U.S. states is Guillermo most popular? Guillermo has historically been most popular in Arizona, Puerto Rico, California. Rankings vary year to year, but these states show the strongest concentration of births named Guillermo. Is Guillermo a unisex name? In U.S. Social Security records, Guillermo is primarily a boy's name. We don't have meaningful data for it as a girl's name. What names go well with Guillermo? Names that share a similar style or popularity range with Guillermo include Rolland, Gale, Mauricio. These pairings are based on rank proximity and naming era in U.S. data. ## Similar Names [👧AnellPeak #9336](/anell)[👧KellieannPeak #9336](/kellieann)[👧NeisaPeak #9336](/neisa)[👧ShandoraPeak #9336](/shandora)[👧CynnamonPeak #9336](/cynnamon)[👧TrachellePeak #9336](/trachelle)[👧JeannetPeak #9336](/jeannet)[👧LacristaPeak #9336](/lacrista) ## About the name Guillermo Guillermo is a boy baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1885 and has accumulated 32K births in the dataset. Guillermo's peak popularity came in 1998 when it ranked #352\. Use the chart and map above to compare Guillermo's trajectory across years and U.S. states, or browse the related names section to discover similar choices. ### Continue exploring * [ Top names of 1998 → ](/year/1998) * [ Names of the 1990s → ](/decade/1990s) * [ Names starting with "G" → ](/letter/g) * [ Browse all boy names → ](/names/boys) * [ Top names of 2026 → ](/year/2026) Data sources * Birth statistics (counts, ranks, years 1880–2026) — U.S. [Social Security Administration ](https://www.ssa.gov/oact/babynames/). Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships. * Etymology, cultural origins, and related forms — [Behind the Name ](https://www.behindthename.com/) (used under their public API terms). * Meaning prose and editorial summary — [Wikipedia ](https://en.wikipedia.org/) article extracts, licensed under [CC BY-SA 3.0 ](https://creativecommons.org/licenses/by-sa/3.0/). * Predicted nationality distribution — [Nationalize.io ](https://nationalize.io/). * Phonetically similar names — [Datamuse ](https://www.datamuse.com/api/). Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.