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He spent six years in Galatasaray High School which were emotionally harsh years according to him, then he transferred to Bodrum High School, and eventually graduated from Şişli High School in 1984. He attended Tours University Faculty of Law and transferred to Faculty of Economics and Administrative Sciences, Department of Economics. After a year of studying economics, Bayülgen returned to Turkey and attended Mimar Sinan University of Fine Arts State Conservatory, a Turkish state university dedicated to the higher education of fine arts. He graduated in 1989 with a master's degree.
Bayülgen started his career as the youngest director of the State Theaters in 1989. He also worked as an actor there. In 1991, he began his broadcasting career by hosting his own radio show at Kent FM. He took part in the American TV series "The Young Indiana Jones Chronicles" (1992) while it was filming in Istanbul. In 1994, after he was appointed to Trabzon, he was preparing a new play as a director in the State Theatre of Trabzon. However the play got canceled by the executive directors and he quit. After a successful radio career, he created his own late-night TV show called "Gece Kuşu" ("The Night Bird") in 1995 which brought him fame.
In 1996, he appeared on TV with a new late-night TV show, called "Televizyon Çocuğu" ("The Television Kid").
After 2 years break, he returned with "Zaga", his new late-night TV show, and had a huge success again. In 2004, he offered an alternative publishing model with his new high quality and intellectual show program "Herkes Bunu Konuşuyor" ("Everybody Talks This"). In 2005, the late-night TV show "Televizyon Makinası" ("Television Machine") showed everyone his own creativity and hard work. He continued with Makina (Machine) in 2006 and 2007.
After a year break, he started to a new TV show Disko Kralı, (King of Disco) in 2008.
His acting career started with a Mustafa Altıoklar movie, called "İstanbul Kanatlarımın Altında", in 1996. In 1997, the 5 ft.7 actor won the Best Actor Award at Sadri Alışık Acting Awards, for his role in "Ağır Roman" and continued his acting career successfully, as expected. He acted in "Romantik" (1999), "Oyun Bozan" (2000), "Hemşo" (2001) and "Komser Şekspir" (2001), "Sır Çocukları" (2002) and "Gülüm" (2002) ... and many TV series. He is one of the most popular dubbing performers and many famous Hollywood movies were dubbed into Turkish by him.
He continues his photography works and is also known as a photograph artist since March 2012
- 1996 - İstanbul Kanatlarımın Altında, (Istanbul Under My Wings)
- 1997 - Ağır Roman, (The Heavy Novel)
- 1999 - Romantik, (Romantic)
- 2000 - Oyun Bozan, (Wet Blanket)
- 2001 - Hemşo, (Homie)
- 2001 - Komser Şekspir, (Sheakspeare the Commissar)
- 2002 - Sır Çocukları, (Children of Mystery)
- 2002 - Gülüm, (My Dear)
- 2006 - Sınav, (The Exam)
- 2009 - Kanalizasyon, (Sewage TV)
- 1998 - Utanmaz Adam, (Shameless Man)
- 2004 - Size Baba Diyebilir miyim?, (May I Call You 'Daddy'?)
- 1998 - Atları da Vururlar Müzikali, (actor) (Horace McCoy - They Shoot Horses, Don't They?) (musical)
- 2003~2004 - Hangisi Karısı, (director) (Ray Cooney - Run For Your Wife)
- 2005~2006 - Kiralık Oyun, (actor) (Rented Game)
- Herkes Bunu Konuşuyor, (Everybody is Talking This) (2004–2005, NTV)
- Haber Makinası, (News Machine) (2006, CNN TURK)
- Bu Sizi İlgilendiriyor, (This Interests You) (2007, NTV)
- Okan Bayülgen Sade Vatandaş, (Okan Bayülgen Simple Citizen) (2008-2009, NTV)
- Çek Bakalım, (Let's Shoot) (2011...., ATV)
- Gece Kuşu, (The Night Bird) (1994, ATV)
- Televizyon Çocuğu, (The Television Kid) (1996, ATV)
- Zaga, (Zaga) (1997–2005, Kanal D)
- Televizyon Makinası, (Television Machine) (2005–2006, Kanal D)
- Makina, (Machine) (2006–2007, Kanal D)
- Disko Kralı, (King of Disco) (2008-2011, Kanal D)
- Dada Dandinista, (2014-present, Star TV)
- Baobab Yolu - Madagaskar, (Baobab Road - Madagascar), (2006)
- Yaşam Gücü, (Life Power), (2006)
- Pudra - Zamanın Tozu, (Powder - Dust of Time), (2007)
- Erkeklerin Saatlerini Takan Kadınlar, (Women Wearing Men's Watches), (2008)
- Çünkü Gördüğüm En Güzel Kız Sensin, (Because You're the Most Beautiful Girl I've Ever Seen) (-Dove's Global Campaign for Real Beauty), (2008)
- In his latest show Disko Kralı intro, many hidden texts can be read by stones drop down each reading "Consume, Obey, Die" inspired from Obey Giant of American artist Shepard Fairey and the 1988 movie They Live.
- Biyografi.info - Biography of Okan Bayülgen (in Turkish)