Ovsyannikovsky Garden, Regional heritage garden in Saint Petersburg, Russia.

The Ovsyannikovsky Garden covers 1.8 hectares between Prospekt Bakunina, 3rd Sovetskaya, Mytninskaya and Starorusskaya streets. Architect Nikolai Grebyonka laid it out in 1864–1866 as a seven-sided polygon with straight edges; round platforms between the crossing paths once held fountains. A cast-iron railing on a stone base enclosed it, and three entrances opened from the surrounding streets.

The garden was laid out in 1864–1866 by architect Nikolai Grebyonka at the expense of merchant Stepan Ovsyannikov, who lived in the house at 9 Bakunin Avenue facing it. On 5 March 1864 Alexander II ordered it named Ovsyannikovsky. The site had been part of the Konnaya Square, where Nikolai Chernyshevsky underwent a civil execution on 19 May 1864; in 1952 the garden was renamed after him. The city took it over from Ovsyannikova in 1895.

The garden's name honours Stepan Ovsyannikov, the merchant who paid for its laying out in 1864–1866; his house at 9 Bakunin Avenue faces the grounds. In 1952 it was renamed for Nikolai Chernyshevsky, whose civil execution took place here on 19 May 1864, when the site was part of Horse Square. A wooden twelve-sided gazebo with an iron roof and benches was built by 1902.

The garden lies between Bakunin Avenue and the 3rd Sovetskaya, Mytninskaya and Staroruskaya streets, with entrances from several sides; the Mytninskaya entrance was removed by 1880, and a new one opened at Mytninskaya and Staroruskaya in 1895. Paths are flat and benches line the walks. The main facade of Ovsyannikov's house at Bakunin Avenue 9 faces the garden.

The garden's name honours Stepan Ovsyannikov, the merchant who paid for its laying out in 1864–1866; it kept this name until 1952, when it was renamed after Nikolai Chernyshevsky. His civil execution took place on 19 May 1864 on the Winter Horse Square, the ground later built over by the garden and Bakunin Avenue.