Green Theatre, Open-air theatre in Baku, Azerbaijan.

The Green Theatre is an open-air venue in Baku with approximately 2,500 seats arranged in a semicircular layout. Spectators watch performances in natural daylight or under the evening sky.

The Green Theatre was built in the mid-1960s on the initiative of Baku mayor Alish Lambaranski as a venue for major cultural events. It ceased operating in 1993. In August 2005 President Ilham Aliyev ordered repairs, and on 25 July 2007 Baku mayor Hajibala Abutalibov signed a decision creating the Baku Green Theatre Concert Complex.

The theatre was built as a venue for important cultural events, and after the 2005 renovation President Ilham Aliyev said at the opening ceremony that he hoped it would become the favourite entertainment place of Baku's residents. The Azerbaijani name Yaşıl Teatr means "Green Theatre".

The theatre stands on a slope above a wide body of water, with curved seating tiers stepping down toward a recessed stage floor. The stage sits behind a tall light-tan stone facade topped by a flat roof on slender white beams. Seating capacity is given as 2,500 in one source and 1,800 in another.

The seating capacity is given as 2,500 in English-language sources and 1,800 in Azerbaijani sources. On 25 July 2007, Baku mayor Hajibala Abutalibov signed a decision creating the Baku Green Theatre Concert Complex.