The Mid-IR spectrum covering wavelengths from ~2 µm up to THz has become a region of increased interest in recent years. The region is rich in spectroscopic fingerprints of molecules, which are used to identify pollutants for chemical, environmental and medical diagnostics, for process control, as well as for safety, security and defense applications. This meeting will be focused on the most recent advances in mid-IR to THz science and technology, including the latest developments in solid-state, fiber, and semiconductor materials, novel laser sources, nonlinear frequency conversion techniques and parametric devices, as well as the application of mid-IR and THz sources in remote sensing, spectroscopy, frequency synthesis, imaging, and biomedicine.