Holding steady.
Popularity of Gillermo since 1922
Babies named Gillermo per year in U.S. Social Security records. Raw births topped out in 1993, but relative to how few babies were recorded back then, Gillermo's real moment was 1929.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1920s | 55 |
| 1930s | 33 |
| 1940s | 39 |
| 1950s | 56 |
| 1960s | 38 |
| 1970s | 112 |
| 1980s | 103 |
| 1990s | 138 |
| 2000s | 54 |
| 2010s | 5 |
| 2020s | 0 |
Meaning & origin
Gillermo is an exceedingly rare variant of Guillermo, the Spanish form of William. First recorded in 1922, the name saw its peak usage in 1929, but has since remained extremely uncommon, with no rank in recent decades. Its trajectory is stable, indicating consistent but minimal use over time. This name has no strong association with particular states or cultures beyond its Spanish roots, making it a distinctive choice for families seeking a unique twist on a classic.
Gillermo appears to be a rare variant or misspelling of Guillermo, which is the Spanish form of Germanic William, derived from 'wil' (will, desire) and 'helm' (helmet, protection). Despite its early recording in 1922, the name has never achieved notable rank, with a peak in 1929 suggesting occasional but sporadic use.
Nicknames & variants
Nicknames: Gilly, Memo
Variants: Guillermo
Sibling names for Gillermo
Names that share Gillermo's style, for a brother or sister.

