Justine Ellis (b. 1979) is a publisher and photographer from Melbourne, Australia. She is the co-director of Perimeter Books, Perimeter Editions and Perimeter Distribution, and was the co-editor of Composite Journal.
She has published, edited and art-directed more than seventy books on Australian and international photographers, artists and illustrators, and has worked as a photographer in creative, editorial, commercial and architectural contexts. She was on the curatorial committee for Volume: Another Art Book Fair, presented by Artspace Sydney, Perimeter Books and Printed Matter Inc. in 2015 and 2017, and is a co-founder and juror for the Perimeter Small Book Prize and the PHOTO x Perimeter International Photobook Prize. She has undertaken written and photographic contributions for various publications, and has delivered talks and lectures at various universities, institutions and international art book fairs.