Lilien is a very rare variant of Lillian that peaked in 2013 and has since faded.
Lilien is a girl name. In 2025 it ranked #16,303 for girl births in the United States (and #27,023 across all names), given to 5 babies. Lilien was first reported in SSA data in 1920 and peaked in 2013 (7 births).
Girls named Lilien per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1920–2025 · 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