  We propose a model with $A_4$ flavor symmetry for leptons and quarks in the
framework of supersymmetric SU(5) grand unified theory (GUT). The running
masses of quarks and charged leptons at GUT scale ($\sim 10^{16}$ GeV) are
realized by the adjoint 24-dimensional Higgs multiplet and additional gauge
singlet scalar fields including flavons. In this paper, we focus on a result of
the quark and charged lepton masses and quark mixing since our present model is
known to reproduce recent experimental results of the neutrino mass and
oscillation. Those results are showed numerically.
