SnS nanostructures of various morphologies are synthesized by a Polyacrylamide (PAM) assisted hydrothermal process. The morphology of the nanostructures changes with hydrothermal temperature (TH) keeping the hydrothermal time constant at 2 hours. The synthesized nanostructures are characterized by XRD, FTIR, TGA, UV-Vis., FESEM and HRTEM. The remarkable observation is that SnS prefers sheet like structures during their growth. However, morphology changes from nanoparticles, agglomerated nanosheets to micron size bars or spindles with varying TH. TEM images show the nanosheets are single crystalline. The Photoluminescence (PL) shows a broad emission peak at 468nm due to indirect band transition. The intensity of the PL spectra increases with increase in TH.