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://www.portraitarchiv.ch/portrait?page=242
With 4 311 620 bearers, Elena is the 3rd most common feminine given name in Russia (2014 Data). With 1 206 309 bearers, Elena is the 8th most common feminine given name in Ukraine (2014 Data). With 315 064 bearers, Elena is the 4th most common feminine given name in Romania (2014 Data). With 307 744 bearers, Elena is the 1st most common feminine given name in Kazakhstan (2014 Data). With 251 878 bearers, Elena is the 7th most common feminine given name in Belarus (2014 Data).Source: https://forebears.io/forenames/elena
Elena is also Croatian, Slovene, Polish, Czech, Hungarian, Dutch (Rare), Swedish (Rare), Norwegian (Rare), Danish (Rare), and Finnish. The name day for Elena in the Czech Republic is March 16, and the name day for Elena in Finland is July 31.
In 2018, 4 is the most common age for an American (U.S.) Elena who is registered female with the Social Security Administration. It is the 823rd most common female first name for living U.S. citizens.
― Anonymous User 10/15/2018
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Elena is usable in Poland. It isn't traditional here at all, we have Helena as a traditional form and Elena is very rare, but because of the fact that Lena is so horrifically popular at the moment, Elena seems to be slowly rising in popularity as well. It's likeable, easy to make nicknames of it etc. And here it's pronounced e-LE-na. And I pronounce it this way as well.
In Italy Elena is an ageless name since at least the second half of the 19th century. It was the most popular in Rome in 1901, but since then it was always rather common without becoming really overused nor underused. It is equally common among old ladies, middle-aged women, girls and babies. Still nowadays, it ranks 16th in the most popular names in Italy in 2004 and 15th in 2006. Almost a miracle.
Also Hungarian:
https://www.behindthename.com/name/elena/top/hungary
Also Polish:
https://www.behindthename.com/name/elena/top/poland
Also Slovene:
https://www.behindthename.com/name/elena/top/slovenia
https://sl.m.wikipedia.org/wiki/Elena
Also Dutch:
https://www.behindthename.com/name/elena/top/netherlands
https://www.meertens.knaw.nl/nvb/naam/is/Elena
Also Croatian:
https://www.behindthename.com/name/elena/top/croatia
https://actacroatica.com/en/name/Elena/