  We discuss the resummation of threshold logarithms for heavy quark and dijet
cross sections in hadronic collisions. The resummed cross sections are
presented at next-to-leading logarithmic accuracy in terms of anomalous
dimension matrices which describe the factorization of soft gluons from the
hard scattering. We apply our formalism to the calculation of the top quark
production cross section at the Fermilab Tevatron.
