Notes
- On 13 July 2022 Vihar 2020 (Nikolovo), 6th in OG Ruse last season; changes identity (by changing its name, address and leadership) to Lokomotiv 2022 (Ruse). Thus in effect the activity and place in Treta liga of Lokomotiv (Ruse) that was expelled as a BFU member in March 2022 are reinstated.
- Volov (Shumen) plays its home games at the "Panayot Volov" st. in Shumen unless noted otherwise.
- Dorostol Silistra (Silistra) plays its home games at the "Louis Eyer" st. in Silistra unless noted otherwise.
- Dunav ot Ruse II (Ruse) plays its home games at the "Dunav" st. in Ruse unless noted otherwise.
- Lokomotiv 2022 (Ruse) plays its home games at the "Lokomotiv" st. in Ruse unless noted otherwise.
- Ludogorets 1945 III (Razgrad) plays its home games at the "Gnezdo na orli" complex in Razgrad unless noted otherwise.
- Riltsi (kv.Riltsi, Dobrich) plays its home games at the "Druzhba" st. - artificial field in Dobrich unless noted otherwise.
- Svetkavitsa Targovishte (Targovishte) plays its home games at the "Dimitar Burkov" st. in Targovishte unless noted otherwise.
- Spartak 1918 II (Varna) plays its home games at the "Lokomotiv" st. - artificial field in Varna unless noted otherwise.
- Cherno more II (Varna) plays its home games at the "Korabostroitel" st. in kv.Asparuhovo, Varna unless noted otherwise.
Notes
- Botev II (Vratsa) plays its home games at the "Hristo Botev" st. - auxiliary field in Vratsa unless noted otherwise.
- Etar VT II (Veliko Tarnovo) plays its home games at the "Trifon Ivanov" field in Veliko Tarnovo unless noted otherwise.
- Sevlievo (Sevlievo) plays its home games at the "Rakovski" st. in Sevlievo unless noted otherwise.
Notes
- Balkan 1929 (Botevgrad) plays its home games at the "Gerena" st. in Botevgrad (round 1 onwards) due to repair works on the pitch of the "Hristo Botev" st. in Botevgrad.
- Levski Rakovski (Sofia) plays its home games at the "Rakovski" st. in Sofia unless noted otherwise.
- Septemvri II (Sofia) plays its home games in German unless noted otherwise.
- Slavia 1913 II (Sofia) plays its home games at the "Aleksandar Shalamanov" st. in Sofia unless noted otherwise.
- FK CSKA 1948 III (Sofia) plays its home games at the "NSA" st. in Sofia unless noted otherwise.
Notes
- Kyustendil (Kyustendil) plays its home games at the "Osogovo" st. in Kyustendil unless noted otherwise.
- Levski II (Sofia) plays its home games at the "Vivacom arena Georgi Asparuhov" st. - field 2 in Sofia unless noted otherwise.
- OFK Kostinbrod 2012 (Kostinbrod) plays its home games at the "Georgi Benkovski" st. in kv.Maslovo, Kostinbrod unless noted otherwise.
- Oborishte (Panagyurishte) plays its home games at the "Benkovski" st. in Saraya (round 1 onwards) unless noted otherwise.
- CSKA II (Sofia) plays its home games at the "Pancharevo" complex in Sofia unless noted otherwise.
Notes
- Beroe II (Stara Zagora) plays its home games at the "Lokomotiv" st. in Stara Zagora unless noted otherwise.
- Vereya (Stara Zagora) plays its home games at the "Trace arena" st. in kv.Kolyo Ganchev, Stara Zagora unless noted otherwise.
- Dimitrovgrad 1947 (Dimitrovgrad) plays its home games at the "Minyor" st. in Dimitrovgrad unless noted otherwise.
- Lokomotiv 1926 (Plovdiv) plays its home games in Sadovo unless noted otherwise.
- Rodopa Smolyan (Smolyan) plays its home games at the "Septemvri" st. in kv.Raykovo, Smolyan unless noted otherwise.
- Rozova dolina (Kazanlak) plays its home games at the "Sevtopolis" st. in Kazanlak unless noted otherwise.
- Sayana (Haskovo) plays its home games at the "Haskovo" st. in Haskovo unless noted otherwise.
- Spartak 1947 (Plovdiv) plays its home games at the "Plovdiv" st. in Plovdiv unless noted otherwise.
- FK Sliven (Sliven) plays its home games at the "Hadzhi Dimitar" st. in Sliven unless noted otherwise.
- Chernomorets 1919 (Burgas) plays its home games at the "Cherveno zname" st. in kv.Dolno Ezerovo, Burgas unless noted otherwise.