Tula Oblast (Russian: Ту́льская о́бласть, Tulskaya oblast) is a federal subject of Russia (an oblast) with its present borders formed on September 26, 1937. Its administrative center is the city of Tula. The oblast has an area of 25,700 square kilometers (9,900 sq mi) and a population of 1,553,925 (2010 Census preliminary results). The current governor of the oblast is Alexey Dyumin (since 2 February 2016).

People have inhabited Tula area since ancient times, as shown by discoveries of burial mounds (kurgans) and old settlements. These lands were occupied by the Slavic Vyatichi tribe, who cultivated the land, traded, and worked at crafts. This is confirmed by records in property registers, which mention an "ancient settlement" located at the place where the small Tulitsa River flows into the Upa River. In those long-ago times, its inhabitants may also have defended their settlements against raids by Tatars and nomadic tribes, but history is silent on this matter. The first mention of Tula is found in Nikon's chronicle in reference to the campaign of Prince Svyatoslav Olgovich of Chernigov. The chronicle notes that in 1146, the prince, who was heading for Ryazan, passed through a number of other settlements, including Tula, which at the time belonged to the Ryazan Principality.

Tula Oblast is located in Russia's Central Federal District and borders Moscow, Ryazan, Lipetsk, Oryol, and Kaluga Oblasts.

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