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The magnetocaloric and electrical properties in annealed Si-doped Ni(48)Mn(39)In(13-x)Si(x) Heusler alloy ribbons with x = 0-3 have been investigated. These ribbons crystallize in a partially ordered B2 phase structure. It was observed that both the martensitic structural transition T(M) and the Curie temperature T(C) of austenitic phase decrease with increasing Si contents. The small amount of Si in the In position modifies the peak value of positive magnetic entropy change Delta S(M) for a magnetic field change H = 50 kOe, which vary from 20.2 J . kg(-1) . K(-1) for x = 0 to 23.1 J . kg(-1) . K(-1) for x = 1, and then decrease to 10.1 J . kg(-1) . K(-1) for x = 3. Meanwhile, the magnetoresistance associated with the martensitic transformation was found to be -45% for x = 2 at T = 192 K for a magnetic field change of 50 kOe.