J/$\Psi$ production at RHIC/PHENIX PHENIX has measured $J/\psi$ production at backward, mid and forward rapidities both in p+p and d+Au collisions at $\sqrt{s_{NN}}=200$ GeV during the third run of the RHIC. The nuclear modification factor will be discussed as a function of the transverse momentum, rapidity and centrality. Also the current status of J/$\Psi$ analysis from Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV will be presented.