This book was written as a reference book to explain the performance of various aggregate filler types and sizes in stone Mastic Asphalt mixtures. This publication may be of great benefit to practicing engineers, academics and research student. Performance of Aggregate Fillers in Stone Mastic Asphalt Mixtures, contains papers published by the authors in in¬dexed journals between the years 2009 to 2013. This publication is sponsored by the Department of Civil Engineer¬ing, Universiti Putra Malaysia (UPM). Professor Ir. Dr. Ratnasamy Muniandy, Associate Professor Ir. Salihudin Has¬sim and Dr. Taher of the Department of Civil Engineering, Universiti Putra Malaysia, are the editors of the resulting publication. The quality of the papers that appear in this publication reflects not only the obvious efforts of the authors but also the unheralded work of the reviewers.