  (Report of the Top Physics working group at the 1996 DPF/DPB Snowmass
workshop, to appear in the proceedings). We discuss the study of the top quark
at future experiments and machines. Top's large mass makes it a unique probe of
physics at the natural electroweak scale. We emphasize measurements of the top
quark's mass, width, and couplings, as well as searches for rare or nonstandard
decays, and discuss the complementary roles played by hadron and lepton
colliders.
