Jo-Anne McArthur (born December 23, 1976) is a Canadian photojournalist, humane educator, animal rights activist and author. She is known for her We Animals project, a photography project documenting human relationships with animals. Through the We Animals Humane Education program, McArthur offers presentations about human relationships with animals in educational and other environments, and through the We Animals Archive, she provides photographs and other media for those working to help animals. We Animals Media, meanwhile, is a media agency focused on human/animal relationships.McArthur was the primary subject of the 2013 documentary The Ghosts in Our Machine, directed by Liz Marshall, and with Keri Cronin, she is the founder of the Unbound Project, which aims to celebrate and recognize female animal activists. Her first book, We Animals, was published in 2013; her second, Captive, was published in 2017; and a third, Hidden: Animals in the Anthropocene, which was co-authored with the journalist Keith Wilson, was published in 2020. McArthur has been awarded a range of commendations for her photography and activism, including several commendations in the Wildlife Photographer of the Year awards and joint first place in the COP26 photography competition.