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This paper presents the first report of the coexistence of tholeiitic mid-ocean ridge basalt (MORB) – type and alkaline ocean island basalt (OIB) – type mafic volcanics from the Manipur Ophiolite Complex (MOC), Indo-Myanmar Orogenic Belt, northeast India. The MORB-types have comparatively lower TiO₂ concentrations (0.6–1.6 wt.%), show almost flat REE patterns with depleted LREEs [(La/Sm)_N = 0.62–1.03]. However, few samples in the MORB group show enrichment in LREE [(La/Sm)_N = 2.83–2.95] which is the typical composition of P-MORB. Alkaline OIB-types are characterized by high concentration of TiO₂ (1.7–3.5 wt.%) with highly enriched LREE pattern as compared to their HREE [(La/Sm)_N = 2.27–3.44, (Sm/Yb)_N = 2.56–3.29]. Such geochemical variation implies more than two sources. Possibly, one for OIBs (enriched mantle) and several ones for MORBs; from depleted MORB mantle (DMM) source to …