Jac

An uncommon Welsh pick — distinctive and rare.

Boy's nameWelshRising fast Also a pet name
#7416 1874in 2024

Meaning & Origin

a village in Creaca, Sălaj County, Romania

Jac is a boy's baby name, a Welsh short form of Jacob or Jack, from Hebrew Ya'akov meaning 'supplanter' or 'heel-holder.' In Welsh, Jac is the natural Cymric form of Jack, and Welsh-speakers have used it for centuries as the everyday form of the name in Wales. It carries both the ancient Hebrew meaning and the quintessentially Welsh identity.

Jac is the kind of name that carries enormous heritage in minimalist packaging — three letters, one syllable, and the full weight of Welsh cultural identity alongside one of the most beloved names in the English language.

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Popularity Over Time

Jac climbed 363 spots in the last 20 years — from #7779 to #7416.

0591418192019401960198020002024

Popularity by Decade

Decade-by-decade popularity data for Jac
DecadeBirthsTrend
2020s54
2010s101
2000s98
1990s29
1980s5
1970s23
1960s77
1950s117
1940s33
1930s22
1920s30
1910s11

Year-by-Year Data

View complete yearly data(66 years, 19152024)
Year-by-year popularity data for the name Jac
YearBirthsRank
202411#7416
202317#5542
202218#5289
20208#9038
201910#7860
201810#7827
201713#6460
201616#5649
20158#9073
20147#10054
201315#5769
20127#10132
20119#8331
20106#11280
200911#7407
200815#5889
20078#9225
20069#8284
200512#6372
20049#7779

Source: U.S. Social Security Administration. Showing years with 5+ recorded births.

Jac has two lives

Jac, the baby name
#7416boys
600 babies
Currently viewing
Jac, the pet name
#6232pet name
10 pets
View pet page →

Last updated May 2026 · Data: U.S. Social Security Administration (19152024) · Methodology