Abstract: In this study, nickel (Ni) nanoparticles are deposited on the surface of titanium carbide (TiC) powder by an impregnation–fluidized bed reduction process. Then, the highly uniform Ni coated TiC powder is prepared through a nickel-catalyzed autocatalytic electroless plating reaction. TiC–Ni cermets are subsequently fabricated using vacuum sintering. The microstructural morphologies and phase composition of the Ni coated TiC powder and TiC–Ni cermets are characterized by scanning electron microscopy and X-ray diffraction. The performance comparisons of the TiC–Ni cermets prepared from mixed powders under the same sintering conditions are conducted. The results show that the Ni particles are uniformly deposited on the powder surface of TiC. Compared to Ni catalyst content, Ni particle size dominated the electroless rate of Ni, with smaller Ni particles yielding higher deposition rates. When the Ni mass fraction is 0.2%, the average Ni particle size is approximately 22 nm, achieving a maximum electroless plating rate of 3.56 mg·g?1·min?1. Based on this, the highly uniform TiC–20Ni coated powder is prepared. The vacuum sintering conditions for the TiC–20Ni coated powder are optimized. The sintered samples achieve a relative density of 99.54% at 1410 °C. Compared to the cermets fabricated from mixed powders, the homogeneous Ni distribution in the coated powder not only prevents the formation of "Ni pools" in the sintered structure but also effectively suppresses the high-temperature coalescence and grain growth caused by direct TiC contact. As a result, the sintered samples made from coated powder exhibited superior mechanical properties, including a Vickers hardness of 2214 ± 68 HV1.0 and a transverse rupture strength of (1152 ± 20) MPa.