This book gathers the proceedings of the 9th IFToMM International Symposium on Robotics and Mechatronics (ISRM), held in Hanoi, Vietnam, on July 15-17, 2026, this book covers topics in the broad range of topics related to robotics and mechatronics such as mechanism design, modeling and simulation, kinematics and dynamics of multibody systems, navigation and motion planning, wireless sensors and wearable devices, biomechanics and bio-robotics, micro/nano-robotics, complex robotic systems, walking machines, humanoids, smart devices. This book extends this platform to all researchers, scientists, industry experts, and students interested in these fields.