  Renormalization factors for bilinear and four-quark operators with the
Kogut-Susskind fermion action are perturbatively calculated to one-loop order
in the general covariant gauge. Results are presented both for gauge invariant
and non-invariant operators. For four-quark operators the full renormalization
matrix for a complete set of operators with two types of color contraction
structures are worked out and detailed numerical tables are given.
