Medcezir (Tide) is a Turkish teen drama series written by Ece Yörenç and Melek Gençoğlu. It is an adaptation of the American TV series The O.C., created by Josh Schwartz. The story revolves around Yaman Koper, a boy with a poor background and disturbed family life portrayed by Çağatay Ulusoy, and a rich girl named Mira Beylice, portrayed by Serenay Sarıkaya.

Medcezir first premiered on 13 September 2013 on Star TV. Due to its high ratings, the series was renewed for a second season which premiered on 12 September 2014. Director Ali Bilgin stated that the series would be renewed for a third season. However, as the second season did not receive as high ratings as its preceding season, scenarist Ece Yörenç confirmed that the series would end with two seasons. The series ended on 12 June 2015 with 77 episodes in total.

With a turnover of ₺25.6 million by the end of season one, Medcezir became the fifth most successful series in Turkey in terms of net sales and earning the producer as much as possible.