  We include the lowest-lying octet- and decuplet-baryons into partially
quenched chiral perturbation theory. Perturbing about the chiral limit of the
graded SU(6|3)_L x SU(6|3)_R flavor group of partially quenched QCD, we compute
the leading one-loop contributions to the octet-baryon masses, magnetic moments
and matrix elements of isovector twist-2 operators. We work in the isospin
limit and keep two of the three sea quarks degenerate. The usefulness of the
non-unique extension of the electric charge matrix and the isovector twist-2
operators from QCD to partially quenched QCD is discussed.
