With optical design and fabrication playing an ever-increasing role in the modern society as more applications for optics are developed, especially in the areas of imaging, sensing, and illumination systems, the 2019 OSA Optical Design and Fabrication Congress will address these issues in detail with two related topical meetings that address optical fabrication and testing and freeform optics. The Congress will bring scientists, engineers, and designers together so they can interact and learn in both informal and formal settings.