  In this article we study an almost $f$-cosymplectic manifold admitting a
Ricci soliton. We first prove that there do not exist Ricci solitons on an
almost cosymplectic $(\kappa,\mu)$-manifold. Further, we consider an almost
$f$-cosymplectic manifold admitting a Ricci soliton whose potential vector
field is the Reeb vector field and show that a three dimesional almost
$f$-cosymplectic is a cosymplectic manifold. Finally we classify a three
dimensional $\eta$-Einstein almost $f$-cosymplectic manifold admitting a Ricci
soliton.
