Son Na-eun lahir pada 10 Februari 1994 di [[Seoul]], [[Korea Selatan]].<ref>{{cite web|url=https://web.archive.org/web/20170814201720/http://www.asiae.co.kr/news/view.htm?sec=ent5&idxno=2011052600214268143|title=[INTERVIEW] Girl group A PINK - Part 1|date=May 26, 2011|work=10Asia|access-date=2017-08-20|archive-date=2017-08-14|archive-url=https://web.archive.org/web/20170814201720/http://www.asiae.co.kr/news/view.htm?sec=ent5&idxno=2011052600214268143|dead-url=unfit}}</ref> Ia bersekolah di SMA Chungdam dan kemudian ditransfer ke SMA Seni Pertunjukan Seoul, dimana ia lulus pada 7 Februari 2013. Pada tahun 2013, ia diterima di Departemen Teater dan Film sebagai mahasiswi akting [[Universitas Dongguk]].<ref>{{cite news|title=Son Na Eun Admitted to the Same University as SNSD Seo Hyun|url=http://mwave.interest.me/enewsworld/en/article/49760/son-na-eun-soon-to-be-colleagues-with-many-other-idols|accessdate=July 17, 2016|work=enewsWorld|date=November 4, 2013|archive-date=2016-03-04|archive-url=https://web.archive.org/web/20160304060025/http://mwave.interest.me/enewsworld/en/article/49760/son-na-eun-soon-to-be-colleagues-with-many-other-idols|dead-url=yes}}</ref><ref>{{Cite web|url=http://koreatimes.co.kr/www/news/culture/2014/02/135_150902.html|title=Conflicting views of celebs on campus|date=February 3, 2014|website=The Korea Times|access-date=2016-07-16}}</ref> Ia juga terpilih sebagai duta untuk universitas tersebut pada tahun 2014 bersama dengan [[Yoona]] dari [[Girls' Generation]] dan [[Park Ha Sun|Park Ha-sun]].<ref>{{cite news|script-title=윤아‧손나은‧박하선… 동국대 동문 스타 한자리|trans-title=Yoona, Son Naeun, Park Ha-Sun at 108th Anniversary of Dongguk University|url=http://www.epochtimes.co.kr/2014/09/%EC%9C%A4%EC%95%84%E2%80%A7%EC%86%90%EB%82%98%EC%9D%80%E2%80%A7%EB%B0%95%ED%95%98%EC%84%A0-%EB%8F%99%EA%B5%AD%EB%8C%80-%EB%8F%99%EB%AC%B8-%EC%8A%A4%ED%83%80-%ED%95%9C%EC%9E%90%EB%A6%AC/|accessdate=July 17, 2016|work=Epoch Times|date=September 18, 2014|language=ko}}</ref>
