Nanophotonics provides the unprecedented opportunity to engineer nonlinear optical interactions through the nanometer-scale control of geometry provided by modern fabrication technology. In this talk, I will outline our laboratory’s efforts towards realizing the ability to engineer nonlinear interactions across a broad range of optical wavelengths, with a long-term goal of being able to develop methods and devices to access any optical wavelength of interest. Specific examples to be discussed include entangled photon pair sources, optical parametric oscillators, quantum frequency converters, and microresonator frequency combs.