In this study, mechanochemical lindane removal from river sediment in Serbia’s Pannonian Plain’s Tamiš River and forest soil from Golija National Park was investigated. For comparison, artificial soils were used, where SSB simulated clay soil and SSS simulated sandy soil. Real and synthetic samples were subjected to physical processing in a high-energy planetary ball mill under atmospheric pressure. The effect of mechanochemical treatment on lindane removal was explored by varying the milling speed (150–350 rpm) at a constant milling time and lindane concentration (0.15–0.35 mg/L). Lindane concentration after n-hexane solution was measured using gas chromatography. Our research on two types of soil samples (artificial and natural soils) revealed a substantive relationship between soil chemical composition and the extent of lindane breakdown, and also indicated a significant correlation between the degree of lindane degradation and the chemical composition of the soil. As the initial concentration increased, lindane breakdown decreased in all soil samples. Mechanochemical treatment effectively removed lindane from the soil through a mechanochemical process, eliminating the need for further introduction of reactive agents. Higher lindane concentrations posed greater challenges for milling degradation. Based on these results, we conclude that the removal process of lindane is supported by the mechanical energy introduced during grinding supports the lindane removal process. The idea behind this study is that metal oxides and small amounts of transition metals in the soil can help make catalytically active centers that break down organochlorine compounds, such as lindane.