1966 Soviet Class B was a Soviet football competition at the Soviet third tier.
Russian Federation Semifinal Group 1 [Novorossiysk]
Semifinal Group 2 [Kaluga]
Semifinal Group 3 [Tula]
Semifinal Group 4 [Orjonikidze]
Final Group [Nov 5–13, Orjonikidze]
Ukraine
Final playoff Dinamo Khmelnitskiy 0-0 1-1 Avangard Zholtyye Vody
Additional Final [Nov 25, Kiev] Avangard Zholtyye Vody 2-1 Dinamo Khmelnitskiy
For 3rd place Desna Chernigov 0-0 0-2 Lokomotiv Kherson
Central Asia
Union republics [Oct 23–30, Tkibuli]
References All-Soviet Archive Site Results. RSSSF