  We study Seiberg-like dualities in three dimensional N=2 supersymmetric
theories, emphasizing Chern-Simons terms for the global symmetry group, which
affect contact terms in two-point functions of global currents and are
essential to the duality map. We introduce new Seiberg-like dualities for
Yang-Mills-Chern-Simons theories with unitary gauge groups with arbitrary
numbers of matter fields in the fundamental and antifundamental
representations. These dualities are derived from Aharony duality by real mass
deformations. They allow to initiate the systematic study of Seiberg-like
dualities in Chern-Simons quivers. We also comment on known Seiberg-like
dualities for symplectic and orthogonal gauge groups and extend the latter to
the Yang-Mills case. We check our proposals by showing that the localized
partition functions on the squashed S^3 match between dual descriptions.
