  The elastic and transition electromagnetic form factors of mesons are
investigated within a light-front constituent quark model. The general formulae
for the space-like matrix elements of the one-body component of the
electromagnetic current, including both Dirac and Pauli form factors of the
constituent quarks, are presented. Our results for the pion charge form factor
and the $\pi \rho$ transition form factor are reported and compared with those
obtained within various relativistic approaches in a range of values of the
four-momentum transfer accessible to $CEBAF$.
