The Australian and New Zealand Conferences on Optics and Photonics - ANZCOP 2019 brings together four co-located conferences with a central theme of optics and photonics. The ANZCOP conferences will connect people across all scientific disciplines associated with optics and photonics, incorporating general streams on optical science and technology and focused topical conferences on micro- and nano-materials and devices, biomedical photonics, and astronomical instrumentation.