Mitsuba 3 is a research-oriented retargetable rendering system, written in portable C++17 on top of the Dr.Jit Just-In-Time compiler. It is developed by the Realistic Graphics Lab at EPFL. It can be compiled into many variants with optional derivative tracking, dynamic compilation via LLVM or CUDA, and various radiance representations (monochrome, RGB, or spectral light, potentially with polarizat