Eithne is a very rare variant of Eithan that peaked in 2025 and has grown less common since.
Eithne is a girl name. In 2025 it ranked #13,673 for girl births in the United States (and #22,764 across all names), given to 6 babies. Eithne first appears in 2007 and peaked in 2025 (6 births).
Girls named Eithne per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 2007–2025 · U.S.+territories from SSA territory files (1998–2025)