The problem of the non-Darcian natural convection flow of an electrically conducting fluid along a vertical wavy surface embedded in a fluid-saturated porous medium in the presence of a uniform normal magnetic field is investigated. We consider the boundary-layer regime where the Darcy-Rayleigh number is very large, (i.e...Ra). In particular, the wavy surface is considered in the following form)/ˆ(sinˆ)ˆ(ˆ2.xax.... Appropriate transformations are employed to transform the complex wavy surface to a smooth surface. Then, the obtained boundary layer equations are solved numerically using the Runge-Kutta integration scheme with the Newton-Raphson shooting method. Extensive computations are presented for a wide range of the wave amplitudes a, the magnetic field parameter M, and the Grashof number Gr. Graphical results for the velocity, temperature, and the local Nusselt number profiles are illustrated and discussed for various physical parametric values