The steady hydromagnetic laminar flow of an incompressible non-Newtonian micropolar fluid impinging on a plane wall with heat transfer is investigated. A uniform magnetic field is applied normal to the plate which is maintained at a constant temperature. Numerical solution for the governing nonlinear momentum and energy equations is obtained. The effect of the uniform magnetic field and the characteristics of the non-Newtonian fluid on both the flow and heat transfer is presented and discussed.