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Recently, two-dimensional tungsten disulfide (WS₂) has attracted attention as a next generation thermoelectric material due to a favorable Seebeck coefficient. However, its thermoelectric efficiency still needs to be improved due to the intrinsically low electrical conductivity of WS₂. In the present study, thermoelectric properties of WS₂ hybridized with highly conductive single-walled carbon nanohorns (SWCNHs) were investigated. The WS₂/SWCNH nanocomposites were fabricated by annealing the mixture of WS₂ and SWCNHs using a high-frequency induction heated sintering (HFIHS) system. By adding SWCNHs to WS₂, the nanocomposites exhibited increased electrical conductivity and a slightly decreased Seebeck coefficient with the content of SWCNHs. Hence, the maximum power factor of 128.41 &#956;W/mK² was achieved for WS₂/SWCNHs with 0.1 wt.% SWCNHs at 780 K, resulting in a significantly improved thermoelectric figure of merit (<i>zT</i>) value of 0.027 compared to that of pristine WS₂ with <i>zT</i> 0.017.