The Psel or Psyol (Russian: Псёл; Ukrainian: Псел)[a] is a river, a left tributary of the Dnieper, which flows through Russia and Ukraine.

Its periods of freezing range from December until the end of February to the beginning of April.

[1] The following rivers are tributaries to the river Psel (from source to mouth): Left: Ilyok, Pena [ru], Udava [ru], Rybytsia [ru], Sinna, Syrovatka [ru], Ustya, Lehan, Vilshanka, Budylka [ru], Bobrava, Borovenka, Vepryk [uk], Bobryk, Tukh, Glinitsa, Bakai [uk], Lyutenka, Hrun-Tashan, Hovtva, Rudka Right: Sudzha, Porozok, Oleshnia, Sumka, Vorozhba, Mezhyrichka, Hrun, Rashevka, Vuzka, Vovnianka, Balakliyka, Khorol, Manzheliya, Omelnyk, Belichka, Bahachka, Sukhyi Kahamlyk Cities and towns located on the river are: Sumy, Ukraine, the administrative center of Sumy Oblast; Oboyan, Kursk Oblast, Russia; and Hadiach, Poltava Oblast, Ukraine.

The fauna on the riversides of the Psel includes hares, foxes, deer, wild boar, and beavers.

[3] In the river there are about 50 species of fish such as crucian, bream, tench, roach, and others.