After tremendous endeavors, Nanophotonics has already departed from its infancy and stepped into an exciting era, where research ideas and theoretical concepts are being vigorously transferred into functional devices and real-life applications. The fifth edition of the NANOP conference identifies the successful development of Functional Nanophotonics over the last decades as well as outlines upcoming research directions and topics, offering a vibrant platform for scientists to discuss, share, and fantasize. TOPICS Photonic & plasmonic nanomaterials Optics and transport on 2D materials Metamaterials and metasurfaces All dielectric nanophotonics NanoAntennas Strong light-matter interactions at the nanoscale Quantum nano-optics Nano-Optomechanics Nano-optical trapping Quantum dots and colour centres Enhanced spectroscopies Optical sensing Bottom-up approach enabled nanophotonics Nanoscale photothermal effects Hot Electrons Nonlinear & ultrafast nano-optics Advanced imaging Topological photonics & Non-reciprocal nano-optic Inverse design in photonics