First recorded as a given name of Latvians in 1923. Uncertain etymology, possibly a masculine form of Agnese (“Agnes”).
- A male given name.
- Klāvs Siliņš: Latviešu personvārdu vārdnīca. Riga "Zinātne" 1990, →ISBN
-  Population Register of Latvia: Agnis was the only given name of 829 persons in Latvia on May 21st 2010.