This work aims to study the problem of unsteady mixed convection flow near the stagnation point of a heated vertical surface embedded in a nanofluid-saturated porous medium. The employed mathematical model for the nanofluid takes into account the effects of Brownian motion and thermophoresis. The presence of a solid matrix, which exerts first and second resistance parameters, is considered in this study. The selfsimilar solutions for the system of equations governing the problem are obtained. The resulting system of ordinary differential equations that govern the flow are solved numerically using fourth-fifth order Runge-Kutta with shooting method. Numerical results for the dimensionless velocity, temperature and nanoparticle volume
fraction, skin friction, Nusselt number and Sherwood number are produced for different values of the influence parameters.