Sumy Oblast (Ukrainian: Сумська область, translit. Sums’ka oblast’; also referred to as Sumshchyna – Ukrainian: Сумщина) is an oblast (province) in the northeastern part of Ukraine. The administrative center of the oblast is the city of Sumy.

Other important cities within the oblast include Konotop, Okhtyrka, Romny, and Shostka.

As of 1 May 2004, the population is 1,255,866, which includes 886,100 city/town-dwellers, and 483,700 villagers.

The Sumy Oblast is situated in the northeastern part of Ukraine. The area of the oblast' (23,800 km²), comprises about 3,95% of the total area of the country.

The obalst' borders the Bryansk Oblast (Russia) on the northeast, the Kursk Oblast (Russia) on the east, the Poltava on the southwest, the Kharkiv Oblasts on the south, and the Chernihiv Oblast on the west.

The following historic-cultural sited were nominated for the Seven Wonders of Ukraine.

The Sumy Oblast was established on 10 December 1939. Today it comprises 18 raions (districts), 15 cities, 7 city municipalities, 20 Urban-type settlements, 384 village councils, and 1500 villages.

Sumy (Ukrainian: Суми [ˈsumɪ], Russian: Сумы) is a city on the Psel River in Ukraine, and the capital of the Sumy Oblast. As of 2004, the city's population is 283,700. It is served by Sumy Airport.

Sumy was founded in 1652 at the bank of the Psel River (a left tributary of the Dnieper) as a Cossack fortress. It was intended to protect Sloboda Ukraine from the Crimean Tatar attacks. After their attacks discontinued and the territory was incorporated into the Russian Empire, Sumy evolved into an important economical centre. During the German occupation of Ukraine during World War II (1941 – 1943), Sumy sustained heavy damage. The war over, destroyed parts of the city were rebuilt anew. Sumy has been a twin town of Celle, Germany since January 17, 1990.

The city used to be divided into two city raions (districts): Zarichny and Kovpak. However, they were liquidated in 2006.

The majority of residents are Christians (Eastern Orthodox, Roman Catholics and Protestants) There is also a Jewish minority.