First recorded as a given name of Latvians during 1850–1875 (as Taīsija). From the Russian Таи́сия (Taísija, name of a saint), ultimately from Ancient Greek Θαΐς (Thaḯs).
- A female given name.
- A transliteration of the Russian female given name Таисия (Taisija).
- Klāvs Siliņš: Latviešu personvārdu vārdnīca. Riga "Zinātne" 1990, →ISBN
-  Population Register of Latvia: Taisija was the only given name of 1096 persons in Latvia on May 21st 2010, including Russian speakers.