The 'Belorussian Strategic Offensive Operation (i) was the Soviet major undertaking on the north sector of the Eastern Front in Belorussia during the autumn and early winter period of 1943 (3 October/31 December 1943).

The offensive was based on 16 sub-operations, namely the 'Gomel-Rechitsa Offensive Operation' (30 September/30 October), the 'Nevel Offensive Operation' (3/12 October), the '1^st Orsha Offensive Operation' (3/26 October), the 'Battle of Lenino' (12/13 October), the 'Vitebsk (Riga) Offensive Operation' (18/30 October), the 'Idritsa Offensive Operation' (18/30 October), the 'Pskov Offensive Operation' (18/30 October), the 'Polotsk-Vitebsk Offensive Operation' (2/21 November), the 'Pustoshka-Idritsa Offensive Operation' (2/21 November), the 'Gomel-Rechitsa Offensive Operation' (10/30 November), the '2^nd Orsha Offensive Operation' (14 November/5 December), the 'Novi Bykhov–Propoisk Offensive Operation' (22/30 November), the 'Kalinkovichi Offensive Operation' (8/11 December), the 'Gorodok Offensive Operation' (13/31 December), the 'Idritsa-Opochka Offensive Operation' (16 December 1943/15 January 1944) and the 'Kalinkovichi Defensive Operation' (20/27 December).