Cognomen Atro (Adrianus 
, Atro 
) , all over the world, is quite a rare surname. The surname Atro is habitual in Indonesia, where it is a rare surname, North Macedonia, and Hungary. Measured by absolute frequency, this name is the most popular in Indonesia, Spain, and Syria. More frequently, Atro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Adrianus | Germany, Indonesia, South Africa, Spain, Netherlands |
| Atro | Indonesia, Spain, India, Brazil, Netherlands |
Ad, Adriaan, Adriaen, Adrian, Adriano, Adrianu, Adrien, Adrià, Adrián, Are, Ari, Arie, Arjan, Arjen, Arsi, Hadrian, Hadrianus, Ад, Адриа, Адриан, Адриано, Адриану, Адриен, Адрыян, Адріан, Аре, Ари, Арси, Арье, Арьен, Арьян, Эд, Эдриан, Эйдриан, אדריאן, אטרו, ארי, אריה, אריין, אתרו, آري, أدريان, أري, ادريانو, อัตโร, アド, アドリアン, アリー, エイドリアン, 亞力, 艾瑞, 阿德里安, and 阿里
Ki, Oereira, Milambo, Mäkilä, Stenius, Anttila, Koivisto, Kilingo, Poikala, Happonen, Himanen, Hietala, Moilanen, Sarkkinen, Saarinen, Karvinen, Kantanen, Kahiluoto, Petäjäjärvi, Ranta-Aho, Riskumäki, Luukkonen, Nykänen, Nieminen, Nikula, Kulman, Ali, Bai, Berg, Devi, Davi, Gmbi, Jain, Jalo, Mäki, Saini, Singh, Silva, Aalto, Kansi, Tammi, Ursin, Åman, Ahonen, Aakala, Kallio, Khezri, Kärki, and Niemeläinen