We discuss pair production of top squarks, sbottoms, staus, and tau sneutri
nos at a mu(+) mu(-) collider. We present the formulas for the production c
ross sections and perform a detailed numerical analysis within the minimal
supersymmetric standard model. In particular, we consider sfermion producti
on near root s = m(H)o and root s = m(A)o. [S0556-2821(98)09519-8].