  In strongly-coupled theories with no small parameters, there are factors of
4\pi that appear when the couplings of the low-energy effective lagrangian are
written in units of the effective cutoff \Lambda. These numerical factors can
be explained using "naive dimensional analysis." We extend these ideas to
supersymmetric theories, and show how to systematically include small
parameters and couplings to weakly-interacting fields. The basic principle is
that if the fundamental theory is strongly coupled, then the effective theory
must also be strongly coupled at the scale \Lambda. We use our results to
analyze several examples where strong supersymmetric dynamics may be relevant
for phenomenology. For models that break supersymmetry through strong dynamics
with no small parameters, we show that the Goldstino decay constant F is of
order \La^{2} / (4\pi). We also consider theories with standard-model gauge
bosons coupled directly to strong supersymmetry-breaking dynamics near the weak
scale; smoothly-confining theories; and a model that breaks supersymmetry
through the mechanism of a deformed moduli space.
