We have studied the superconductivity of rapidly quenched YPd₂B₂C ribbons. The superconductivity in bulk YPd₂B₂C is completely suppressed by annealing as-cast ingots at hihger temperature, suggesting that the superconducting phase is metastable. The rapidly quenched sample, in the as-quenched state, shows the superconducting transition temperature of about 21 K. Form our magnetic data, the value for the upper critical field H_c2 (0) is estimated to be 10 T. The critical current density and the expected specific heat discontinuity (ΔC/γT_c) were obtained to be about 10⁸ A/m2 at 10 Oe and 1.55, respectively.