A. N. Ostrovsky Drama Theatre, Regional cultural heritage theatre in Dimitrovgrad, Russia.

The A. N. Ostrovsky Drama Theatre is a performance venue in Dimitrovgrad with classical architectural features from its early construction period. The building houses a stage equipped with modern technical systems that support diverse theatrical productions from drama to contemporary works.

The theatre traces its origins to the People's House built in Melekess in 1908 on the initiative of the town Duma led by K. G. Markov; its stage hosted touring companies and amateur productions. On 25 December 1943, by decision of the Ulyanovsk regional executive committee, the Melekess Professional Drama Theatre opened with Ostrovsky's "Late Love". Its first director was Anna Kalnitskaya.

The theatre is named after the Russian playwright Alexander Ostrovsky, whose dramatic works form the core of its repertoire. Visitors can see how these classical plays continue to shape audiences through contemporary interpretations performed throughout the year.

The venue sits centrally in Dimitrovgrad and is straightforward to locate. Check the theatre's official website for current programme information and to reserve seats in advance for performances.

The theatre has run the Teatralny AtomGrad festival since 2011, gathering professional drama, operetta and puppet companies from Russian cities with nuclear facilities; Dimitrovgrad itself hosts the Research Institute of Atomic Reactors. The first edition ran from 5 to 12 November 2011 with support from the Ministry of Culture and Rosatom.