She was born on August 13 1985 in Izmir. She graduated from Mersin University Fine Arts Faculty - Department of Opera. She began her acting training at Sahne Tozu Theater.She made her acting debut in the TV drama series, "Öyle Bir Geçer Zaman Ki" in 2011-2012. Following that, she starred in other TV series; "Ask Kaç Beden Giyer", "Bir Ask Hikayesi", "Kurt Seyit ve Shura", "Kiralik Ask/Love for Rent", "Çarpisma/Crash", and Netflix original series "Yasamayanlar/Immortals."Elçin Sangu's first role in the silver screen was "Mutluluk Zamani" in 2017. She also starred in an Ezel Akay film "9 Kere Leyla/Leyla Everlasting" in 2020, which premiered in Netflix.In 2015, with Defne character she played in "Kiralik Ask", she got the "Best Actress" awards from "Radyo Televizyon Gazetecileri Dernegi", "Ayakli Gazete", "MGD 22. Altin Objektif" and from many other universities, educative, and public organizations. Lastly, she won the "Best Actress in Comedy" award from "43. Pantene Golden Butterfly Awards". In January 2018 for her performance in the TV series "Kiralik Ask", Elçin Sangu was given Best International Actress award by DIAFA (Distinctive International Arab Festivals Awards).