Relative permeability for a fluid is the relative flow of that fluid when its saturation in the reservoir rock is less than a hundred percent. It is also the ratio of effective to absolute permeability at a given saturation condition of the rock pore spaces and the wetting characteristics of the fluid/rock surfaces. Direct relative permeability data is very difficult to determine for the Niger Delta reservoirs because of. — Problems connected with obtaining sufficient and representative data for the area; — No comprehensive work on this determination has so far been done in the area; — Existing correlations from literature gives inaccurate values for the area. In this investigation, empirical equations for two phase relative permeability data (oil/water, gas/oil systems), are developed by processing a large set of core data samples from special core analysis of various wells of the Niger Delta reservoirs. The generalized empirical equation: Krf = RWeλs, serves as a: — First estimate of the relative permeability values for Niger Delta reservoirs which have little or no available data information. — Means of cross-checking relative permeability values obtained through other methods. — Means of obtaining the relative permeability data when good estimate of fluid saturations are possible. — Good and economical starting set of relative permeability data during history matching phase of reservoir simulation for the Niger Delta reservoirs.