This article examines the effectiveness of developing logical thinking in preschool children through the Montessori method in preschool educational organizations. In the context of the modernization of preschool education systems, the implementation of innovative pedagogical technologies aimed at the comprehensive development of a child's personality has become increasingly important. The Montessori method is a humanistic educational approach based on the principles of independent activity, freedom of choice, individualized learning pace, and a specially prepared learning environment. The use of Montessori didactic materials promotes the development of children's abilities to analyze, compare, classify, identify cause-and-effect relationships, generalize information, and make independent decisions, all of which are essential components of logical thinking. The article analyzes the theoretical foundations of the Montessori method, identifies the pedagogical conditions necessary for its effective implementation in preschool educational institutions, and presents the results of practice-oriented learning activities designed to enhance children's intellectual abilities. Particular attention is given to the role of the teacher as the organizer of a stimulating educational environment that encourages cognitive activity, independence, and active learning. The findings indicate that the systematic use of Montessori materials has a positive impact on the development of cognitive processes, improves children's concentration, strengthens research and problem-solving skills, enhances mathematical understanding, and promotes the development of logical reasoning. The study concludes that integrating the Montessori method into the educational process of preschool institutions is an effective means of fostering logical thinking and preparing children for successful learning at subsequent stages of education.