We calculate the supersymmetric Omicron(alpha(s)) QCD corrections to t
he decays (q) over tilde-->q'(X) over tilde(j)(+/-)(i,j=1,2) and <(q)o
ver tilde (i)>-->q<(<X)over tilde(k)(0)> (k=1,...,4) within the Minima
l Supersymmetric Standard Model. In particular we consider the decays
of squarks of the third generation, <(t)over tilde (i)> and <(b)over t
ilde (i)> (i=1,2), where the left-right mixing must be taken into acco
unt. The corrections turn out to be of about 10%, except for higgsino-
like charginos or neutralinos, where they can go up to 40%.