This book constitutes the refereed proceedings of the 8th International Conference on Soft Computing in Data Science, SCDS 2025, which was held in Penang, Malaysia, in October 8-9, 2025. The 35 full papers presented in this book were carefully selected and reviewed from 71 submissions. These papers have been organized in the following topical sections: Data Analytics and Technologies Data Mining and Image Processing Mathematical and Statistical Learning Artificial Intelligence Techniques and Applications Computing and Optimization