  We derive the equations of motion of an electrically neutral test particle
for modified gravity theories in which the covariant divergence of the ordinary
matter energy-momentum tensor dose not vanish (i.e.
$\nabla_{\mu}T^{\mu\nu}\neq0$). In fact, we generalize the Mathisson-Papapetrou
equations by deriving a general form for the equations of motion of a test
particle. Furthermore, using the generalized Mathisson-Papapetrou equations, we
investigate the equations of motion of a pole-dipole (spinning) particle in the
context of Modified Gravity (MOG).
