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- On 1 July 1964 BFF announces a decision that as of 1964/65 all ZFG are to be composed of 14 teams each. As a result Yantra (Tsenovo) avoids relegation and an additional team is promoted from the okrazhni grupi. The reason why Minyor (Senovo) doesn't also avoid relegation instead is unknown.
- During the spring part of the season DMZ "Georgi Dimitrov" Ruse becomes a sporten klub and is renamed to Torpedo.
- Notes on worker fizkulturni kolektivi teams:
- DMZ "Stomana" (Silistra) - fizkulturen kolektiv of Darzhaven mashinostroitelen zavod "Stomana" (metal-cutting machinery factory) that is part of FD Dorostol;
- Torpedo (Ruse) - fizkulturen kolektiv (later sporten klub) of Darzhaven mashinostroitelen zavod "Georgi Dimitrov" (agricultural machinery factory) that is part of FD Dunav.