The research “Monopolistic trend analysis in the context of efficient entrepreneurial decision making” provides a multi – perspective description of the nature, the occurrence sources, the development procedure and the internal conjuncture specifics of the present day monopolisation process as well as providing an example of modern econometrical method application within a unified framework of market competition analysis for the purpose of conducting a quantitative competition evaluation on an industry–level, resulting in applicable outcomes, suited for both private and public actors in terms of investment/entrepreneurial activity strategic analysis for the former and policy/regulatory action planning for the latter. The main scope of the aforementioned research is devoted to developing and consequential further enhancement of monopolistic tendencies’ detecting and quantitative analysis practices, while simultaneously considering the broader context of market power phenomenon, its specifics, influence and effects. The introduced methodology shall be structured in a coherently – comprehensive manner, enabling a constituent analytical basis for detecting a possibly monopolistic market trend through both quantitative and qualitative evaluation of individual market power distribution between the suppliers, involved in economic activities within a defined relevant market.