Meaning & origin
A reliable meaning for Illiam isn’t established in our sources yet. Rather than guess, we show what is recorded: how the name is used, how often, and the names it’s connected to.
The story
Published U.S. birth records include this spelling as early as 1975. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Illiam through the years
- Babies since 1880
- 42
- 42 boys · 0 girls
- Most popular year
- 1981
- 8 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
The most recent published U.S. birth count for boys is 6 in 1989. Later missing counts do not mean the name went unused. Its largest published annual count for boys was 8 in 1981.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Illiam’s family of names
In Manx usage, Illiam has a conventional equivalent in the French form Guillaume. In Manx usage, Illiam has a conventional equivalent in the German form Wilhelm. In Manx usage, Illiam has a conventional equivalent in the Greek form Γουλιέλμος.
The ring: across languages.
Around the world
Illiam has relatives in 3 languages.
3 related names in 3 languages. Point at a dot, or tab to the map and use the arrow keys.
Across languages 4
Equivalents and cognates in other languages, plus older forms it grew from.
Similar names
If you love Illiam, these share its style, era, origin or sound, from outside its own family.
Ikaika
“having great strength”
>99% boys
Wilfredo
“one who wishes for peace”
>99% boys
Adams
“man” · “of the earth”
>99% boys
Antwan
“a flourishing man; from an ancient Roman family”
>99% boys
Anand
“joy, delight, pleasure”
90% boys · 10% girls
Eugenio
“a wellborn man”
>99% boys
Anwar
“surrounded by light” · “luminous”
98% boys · 2% girls
Kristofer
“a follower of Christ”
>99% boys