  The RHIC high energy collision of species ranging from p+p, p(d)+A to A+A
provide access to the {small-x} component of the hadron wave function. The RHIC
program has brought renewed interest in that subject with its ability to reach
values of the parton momentum fraction smaller than 0.01 with studies of
particle production at high rapidity. Furthermore, the use of heavy nuclei in
the p(d)+A collisions facilitates the study of saturation effects in the
gluonic component of the nuclei because the appropriate scale for that regime
grows as A^1/3. We review the experimental results of the RHIC program that
have relevance to {small-x} emphasizing the physics extracted from d+Au
collisions and their comparison to p+p collisions at the same energy.
