  We present a new family of dualities for three-dimensional gauge theories,
motivated by the brane realization of the reduction of four-dimensional
dualities on a circle. This family can be understood as a generalization of
Aharony duality to quiver gauge theories whose nodes interact via monopole
terms in the superpotential. We refer to this family of theories as monopole
quivers. We corroborate the new dualities by checking the equivalence of the
three-sphere partition functions, obtained from the standard circle reduction
of the four-dimensional superconformal index. As a special case, we recover
some dualities recently discussed in the literature.}
