male NAME · CURRENTLY #902
Guillermo
gee-YAIR-moh
“resolute protector”
The Spanish form of William.
SSA POPULARITY HISTORY
How Guillermo has traveled through time
51885
61900
101905
131910
331915
681920
881925
1011930
721935
711940
941945
1271950
1501955
1911960
2031965
2901970
3541975
4001980
4371985
5871990
6291995
6512000
6162005
4572010
3892015
2752020
2642025
LATEST YEAR2025264 births
PEAK RANK#352in 1996
CURRENT USAGE0% F100% M
Source: U.S. Social Security Administration. SSA excludes names with fewer than five occurrences in a geographic area.