The Cemil Topuzlu Open-Air Theatre (Turkish: Cemil Topuzlu Harbiye Açık Hava Tiyatrosu, also called simply Açık Hava Tiyatrosu) is a contemporary amphitheatre located in the Harbiye neighborhood of Istanbul, Turkey. It is situated across from the Lütfi Kırdar Congress Center and Exhibition Hall, and behind the Istanbul Hilton Hotel on the European side of the city.
Its construction was begun in 1946 and completed in 1947. Named after Cemil Topuzlu Pasha (1866-1958), the legendary mayor of İstanbul in the era of Ottoman Second Constitutional Monarchy, it is the biggest open-air theatre in Istanbul with a 3,975 seat capacity. It holds 4,500 people in total in a style reminiscent of classical theatres.
As the city's most popular summertime venue, the theatre primarily hosts music concerts in various genres of local and international performers. It also hosts cultural activities for several festivals held in Istanbul in the summer.
In its history the theatre has hosted world famous artists such as Miles Davis, Bob Dylan, Leonard Cohen, Keith Jarrett, Iron Maiden, Björk, Massive Attack, Nick Cave, Tori Amos, Robert Plant, Elvis Costello, Diana Krall, Marcus Miller, Chick Corea, Bryan Ferry, Loreena McKennitt, Simply Red, Joan Baez, Jane Birkin, Ornette Coleman, Stanley Clarke, Joshua Redman, Patti Smith, Suzanne Vega, Buena Vista Social Club, Deep Forest, PJ Harvey, Lou Reed, Michael Bolton, Bryan Adams, Anathema, Jethro Tull, Pink Martini, Caetano Veloso, Herbie Hancock, Haris Alexiou, Goran Bregovic, The Blues Brothers Band, Deep Purple, Slayer, Sting and many more.