Illian is a very rare variant of Iliana that was first reported in SSA data in 2022 and is quickly gaining ground.
Illian is a boy name. In 2025 it ranked #7,360 for boy births in the United States (and #15,463 across all names), given to 11 babies. Illian was first reported in SSA data in 2022 and peaked in 2025 (11 births).
Boys named Illian per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 2022–2025 · U.S.+territories from SSA territory files (1998–2025) · SSA publishes a name only in years it was given to at least 5 babies, so a name may have been in use before — or between — the years shown here