An OTA-C current-mode universal filter with independent tunable-Q realized by band-reject function is proposed. The proposed circuit employs OTAs and grounded capacitors. The parameter QP can be tuned independently from omegaP. However, the other different kinds filter function as low-pass, high-pass, band-pass and band-reject response can be also obtained without changing circuit topology. The parameters omegaP and Qp can be electronically tuned through adjusting the transconductance gains of the OTAs. Moreover, the parameter Qp can be also tuned by changing component manually without effect to the omegaP The simulation results have been carried out by PSpice