| Season: | 1945 |
| Nextseason: | 1946 |
The 1945 Soviet First League was the first post-war season and the fifth since the establishing of the second tier. The tier was named the Second Group which before carried name Group B.
After the World War II some team managed to preserve themselves since the last season which was played five years ago in 1940. The following teams returned to the league Spartak Leningrad, Pishchevik Odessa, Torpedo Gorky, Dinamo (Spartak) Yerevan. From all Ukrainian teams (4) that took part in the war championship of the Top League, only Dynamo were allowed to stay while the other three were placed in a tier below. Notable is the fact that season saw participation of two teams from the Moscow Military District (VVS and MVO) both of which finished at the top of season table, yet missing a promotion after allowing Krylya Sovetov to squeeze by.
| Number | Union republics | Team(s) | |
|---|---|---|---|
| 12 | VVS Moscow, MVO Moscow, KBF Leningrad, FC Spartak Leningrad, FC Trudovye Rezervy Moscow FC Tekstilschik Ivanovo, FC Krylia Sovetov Kuibyshev, FC Torpedo Gorky, FC Krylia Sovetov Molotov, FC Traktor Chelyabinsk, FC Uralmash Sverdlovsk, DKA Novosibirsk | ||
| 3 | FC Stakhanovets Stalino, FC Pischevik Odessa, FC Lokomotiv Kharkov | ||
| 1 | DKA Tbilisi | ||
| 1 | FC Dinamo Yerevan | ||
| 1 | FC Dinamo Baku |