The oxidation products (MoO ₃ and V ₂ O ₅ ) have low melting points and tend to sublimate at high temperatures despite that MoSi ₂ and VSi ₂ may possess good self‐lubricating properties. To cope with this challenge, a high‐entropy transition metal disilicide was designed in this work in which transition metal elements that could form high melting point oxides were deliberately added. The high‐entropy (Ti _0.2 V _0.2 Nb _0.2 Mo _0.2 W _0.2 )Si ₂ (HE‐MSi ₂ ) with hexagonal structure was successfully prepared by SPS using Ti, V, Nb, Mo, W, and Si powders as the initial materials in this work. The HE‐MSi ₂ presents a high hardness (11.8 ± 0.4 GPa) and elastic modulus (387.2 ± 46.8 GPa). In particular, its hardness is higher than that of the corresponding disilicides. Noteworthy, HE‐MSi ₂ demonstrated superior wear resistance when compared to Mo‐Si‐based ceramics (such as MoSi ₂ , Mo ₅ Si ₃ , and Mo ₅ SiB ₂ ), high‐entropy carbides (such as (MoTaWVTi)C, (HfMoNbTaTi)C, and (TiVNbMoW) _4.375 , and traditional single‐phase ceramics (including Sialon, Si ₃ N ₄ , Al ₂ O ₃ , SiC, and ZrO ₂ ). Meanwhile, at a high temperature of 600°C, the friction coefficient and wear rate were reduced to 0.64 ± 0.05 and (1.88 ± 0.15)×10 ⁶ mm ³ /N·m, respectively. The preferential oxidation of different elements of the HE‐MSi ₂ was validated through systematical characterization of composition evolution, which was dominantly impacted by high temperature and friction induction.

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