Description: Image-Based Simulation for Industry (IBSim-4i) 2023 is organised by the Zienkiewicz Institute, Swansea University and the Institute of Physics with support from EPSRC and CCPi Tomographic Imaging. Image-based meshing is the process by which 3D images (e.g. X-ray CT or laser scanning) are converted into ultra-high resolution simulations. 3D imaging is increasingly being used in the industrial sector for inspection, non-destructive testing / evaluation (NDT/NDE) and metrology but image-based simulation is still an underutilised technique. Our aim is that the activities of IBSim-4i will facilitate a wider adoption of image-based simulation and provide a platform to discuss the cutting-edge developments in the field.