Surname Alenka (Alenka 
, Аленка 
, Алёнка 
) , throughout the world, is quite a rare cognomen. The family name Alenka is characteristic of Slovenia, where it is quite a common surname, Czechia, where it is a rare surname, and North Macedonia. In absolute terms, the name is most common in Slovenia, Indonesia, and Czechia. More prevalently, Alenka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alenka | Czechia, Croatia, Sierra Leone, Slovenia, Slovakia |
| Аленка | Kazakhstan, Russia, Ukraine, Bulgaria |
| Алёнка | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| אלנקה | Israel |
Alena, Aliona, Aljona, Alyona, Alëna, Alënka, Elena, Eleni, Ellen, Helen, Helena, Helene, Helka, Heléna, Hélène, Ileana, Jela, Jelena, Jeļena, Leana, Leena, Lena, Lene, Lenka, Lenke, Lenuța, Léna, Nuța, Olena, Έλεν, Έλενα, Ελένα, Ελένη, Λένα, Алена, Аленька, Альона, Алёна, Гелен, Гелена, Елен, Елена, Елена, Элена, Хелена, Елени, Йелена, Лена, Лене, Ленка, Ленке, Ленуца, Леэна, Лина, Олена, Хелен, Хелена, Элен, Элена, Эллен, Єлена, Јелена, Јелица, Јелка, אלונה, אלן, אלנה, הלן, הלנה, ילנה, לנה, إلين, إلينا, إيلينا, لنا, لينا, هيلين, هيلينا, এলেন, লীনা, হেলেন, হেলেনা, ელენა, ელენე, アリーナ, エレナ, エレン, エレーナ, エレーヌ, ヘレナ, ヘレン, リーナ, レナ, レネ, レンカ, 兰卡, 奥莉娜, 愛倫, 杰拉, 杰琳娜, 海伦, 海倫, 海蓮娜, 琳恩, 艾伦, 艾倫, 莉娜, 莱娜, 莲娜, and 헬렌
Ar, Eržen, Hercog, Horvat, Hočevar, Vidmar, Žagar, Černe, Mladina, Sanchez, Tavčar, Kordish, Podbevšek, Dolinar, Ivanova, Kastelic, Reckovic, Gonzalez, Grealish, Konečná, Paternost, Pavlič, Lalić, Rozman, Ravnik, Ak, Ek, Nik, Zic, Bajc, Pirc, Íková, Silva, Cerne, Kralj, Golob, Lazar, Jenko, Jelen, Novak, Zagar, Zupan, Zoric, Babič, Košir, Pavlin, Zupančič, and Nováková