Prince of Novgorod-Seversk was the kniaz, the ruler or sub-ruler, of the Principality of Novgorod-Seversk. It may have been created in 1139, the date of one modern authority,^{[citation needed]} and is most famous for Igor Sviatoslavich, hero of the Old East Slavic Tale of Igor's Campaign.

This article relies largely or entirely on a single source. (October 2014)

• Sviatoslav Olgovich (d. 1164), Prince of Novgorod (1136–1138) and Novgorod-Seversky (1139)
• Oleg Sviatoslavich, d. 1180
• Igor Sviatoslavich, d. 1202
• Vladimir Igorevich, d. 1208
• Roman Igorevich, d. 1211
• Oleg Igoreivich

In the aftermath of the Mongol invasions, it fell under the control of Briansk. The principality was taken over by the Lithuanians in the fourteenth-century when the power of the Golden Horde began to decline. In the fifteenth-century the principality was given to Prince Ivan of Mozhaisk when he fled from Grand Prince Vasily II.

Under Lithuanian overlordship

• Ivan Dmitrievich of Mozhaisk, d. 1471 x 1485
• Semen Ivanovich, d. x 1500
• Vasily Ivanovich, d. 1519