Selina

Also of Brazilian Portuguese and Dutch usage.
https://www.behindthename.com/name/selina/top/netherlands
https://www.behindthename.com/name/selina/top/brazil

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Also popular in English-speaking African countries like South-Africa, Ghana, Tanzania and Kenya.
https://forebears.io/forenames/selina

This name was fairly common in the English Romani community in the 1800s: http://theromany.weebly.com/1881-census-for-gypsy-and-gipsy-all-counties.html
https://rtfhs.org.uk/the_rtfhs_baptism_index/ -- SMITH Ann Selina
https://rtfhs.org.uk/the_rtfhs_baptism_index/ -- TAYLOR Selina

Also Finnish: https://www.nordicnames.de/wiki/Selina

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Also Dutch: https://www.meertens.knaw.nl/nvb/naam/is/Selina

Also German:

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https://www.behindthename.com/name/selina/top/austria
https://de.m.wikipedia.org/wiki/Celina [noted -ed]

Selina is also Finnish. The name day for Selina in Finland is March 23.

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Sources: https://forebears.io/forenames/selina
https://www.names.org/n/selina/about
https://fi.m.wikipedia.org/wiki/Selina
https://almanakka.helsinki.fi/en/name-days/name-day-search.html

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://rm.wikipedia.org/wiki/Selina_Ch%C3%B6nz
https://sursassiala.ch/2015/01/15/familienforschung/

Also Finnish name. Finnish name day March 23.
https://fi.wikipedia.org/wiki/Selina
https://almanakka.helsinki.fi/en/name-days/name-day-search.html

The name Selina was given to 221 girls born in the US in 2015.

I looked this up name in a baby name book and it is Greek not English!

This variant is commonly used in European countries (Russia and Finland are two in particular).