Samar Raion (Ukrainian: Самарівський район), until 2024 known as Novomoskovsk Raion (Ukrainian: Новомосковський район), is a raion (district) of Dnipropetrovsk Oblast, southeastern-central Ukraine.

Its administrative centre is located at Samar.

[2] On 18 July 2020, as part of the administrative reform of Ukraine, the number of raions of Dnipropetrovsk Oblast was reduced to seven, and the area of Novomoskovsk Raion was significantly expanded.

[3][4] The January 2020 estimate of the raion population was 71,613 (2020 est.).

[6] After the reform in July 2020, the raion consisted of eight hromadas:[4] Before the 2020 reform, the raion consisted of four hromadas:[9]