This study aims to increase the participation in mathematics learning of Grade VII-H students at SMP Negeri 2 Taman in the 2023/2024 school year by implementing process-differentiated learning based on visual, auditory, and kinesthetic learning styles. This research uses the Classroom Action Research (CAR) method which consists of two cycles, which include planning, action, observation, and reflection. The students in Grades VII-H were divided into homogeneous groups based on their learning styles, but heterogeneous based on their initial abilities, with each group consisting of 3 students. The results of the first cycle showed an increase in students’ participation in mathematics from the previous learning, with the participation score percentage reaching 70.19%, and increased by 12.59% to 82.78% in the second cycle. This increase is included in the high criteria, which are to be very high, with students becoming more actively engaged in learning, especially in group discussions and presentations. This research showed that the implementation of differentiated learning based on learning styles is effective in increasing the participation in mathematics learning of Grade VII-H students at SMP Negeri 2 Taman in the 2023/2024 school year.