Semih Sergen is a Turkish theater actor, director, film and TV series actor, playwright and poetry writer.

Semih Sergen was born in Istanbul to a family that had lived in Istanbul for nine generations. During his youth, he worked in various jobs ranging from carpentry to painting. Sergen, whose love for theater was formed in his childhood years, started his theater life as the president of the theater branch of the school he attended. Later, at the request of his family, he won the Navy exam. However, he also secretly took the conservatory exam at the same time. In 1949, he became a student of masters such as Nurettin Sevin, Mahir Canova and Cüneyt Gökçer at the Ankara State Conservatory.

After graduating from the Ankara State Conservatory's Theater Department, he played many important characters in the intervening years. Sometimes he was Don Carlos, sometimes Selim III. He was also Sergeant Musgrave, Ahmet the Chauffeur and Sinan the Architect.

He played more than 100 leading roles in the theater and staged more than 40 plays. He has 11 books in which he collected his plays and 17 poetry books. He produced the first 45 vinyl record of poetry in Turkey. This was followed by various cassettes and CDs. He shared the lead role with Işık Yenersu in the first photonovela translated in Turkey. In 1958, he met Yeşilçam with the movie "Duvaklı Göl" (Lake with Veil).

Sergen wrote articles for many newspapers and magazines, especially "Milli Kültür" magazine, and his poems and stories were accepted and published in Türk Dili magazine. Currently living in Bodrum, Semih Sergen directs the Semih Sergen and Friends Theater, which he founded under his own name, and is the father of brothers Burak Sergen and Toprak Sergen, who are also theater actors.