Collection of selected, peer reviewed papers from the 18th International Symposium on Advances in Abrasive Technology (ISAAT 2015), October 4-7, 2015, Juju Island, Korea. The 114 papers are grouped as follows: Chapter 1: Grinding Chapter 2: Abrasive Jet Machining Chapter 3: Advanced Cutting Technology Chapter 4: Processing of Brittle Materials Chapter 5: Chemical Mechanical Polishing, Processing of Semiconductor Wafer Chapter 6: Electrical Discharge Machining, Ultrasonic and Beam Machining Chapter 7: Finishing, Lapping and Polishing Chapter 8: Surface and Subsurface Integrity and Materials Characterization Chapter 9: In-Process Measurement and Monitoring, Metrology Chapter 10: Machine Tools and Systems, Tooling Processing