Marianna

Also Latvian: https://personvardi.pmlp.gov.lv/index.php?name=45210 [noted -ed]

Also Czech: https://cs.m.wikipedia.org/wiki/Mariana - listed as a variant

Also Romansh:
Source: "Vornamen in der Schweiz. Prénoms en Suisse. I nomi in Svizzera. Prenoms in Svizra" (1993) published by the Association of Swiss registrars
https://nossaistorgia.ch/entries/vxYZeKQ6DA5
https://nossaistorgia.ch/entries/KEAVX0pJVNa
https://nossaistorgia.ch/entries/NkWMggm1Myw
https://www.portraitarchiv.ch/portrait?page=61

Also Armenian: https://www.behindthename.com/name/marianna/top/armenia

Also Gascon: https://ieo-oc.org/spip.php?page=article&id_article=300 --- Source: Institut d'Estudis Occitans

Marianna is also Finnish, Latvian, and Estonian. The name day for Marianna in Finland is August 15. The name day for Marianna in Latvia is September 20. The name day for Marianna in Estonia is September 8.

Also Banatswabian: https://ofb.genealogy.net/famreport.php?ofb=zichydorf&ID=I16986&nachname=Achtzehner&modus=&lang=de
https://ofb.genealogy.net/famreport.php?ofb=zichydorf&ID=I29965&nachname=Adatschi&modus=&lang=de
https://ofb.genealogy.net/famreport.php?ofb=zichydorf&ID=I20593&nachname=Awender&modus=&lang=de

This name was also used among the German minority in Bessarabia (and far more common than Marianne): https://ofb.genealogy.net/famreport.php?ofb=krasna&ID=I1179&nachname=Damm&modus=&lang=de
https://ofb.genealogy.net/famreport.php?ofb=krasna&ID=I404&nachname=Dressler&modus=&lang=de
https://ofb.genealogy.net/famreport.php?ofb=krasna&ID=I327&nachname=Maas&modus=&lang=de

Also Sardinian: https://it.wikipedia.org/wiki/Prenomi_sardi#M
https://sc.wikipedia.org/wiki/Marianna_Bussalai

Also Sicilian: https://scn.wikipedia.org/wiki/Noma_siciliani

Also Estonian: https://et.wikipedia.org/wiki/Marianna_(eesnimi)

Also Breton: https://br.wikipedia.org/wiki/Mari -- mention Marianna
https://br.wikipedia.org/wiki/Marianna
http://www.meilleursprenoms.com/stats/prenoms_stat.php/Marianna

Also Catalan: http://www.idescat.cat/noms/?q=Marianna&lang=en.

Also Latvian: https://www.pmlp.gov.lv/lv/sakums/statistika/personvardu-datu-baze/?id=137&query=Marianna.

The name Marianna was given to 339 girls born in the US in 2016.
More than 99.9 percent of people with the first name Marianna are female.

With 28 621 bearers, Marianna is the 46th most common feminine name in Hungary. (01/01/2016).

It´s also the Czech and Slovak form.
Nickname: Maria, Marjánka, Marka, Riana.

It is also a Polish name. [noted -ed]