Theodore Niizhotay Fontaine (1941–2021) was a member and former chief of the Sagkeeng Ojibway First Nation in Manitoba. He attended the Fort Alexander and Assiniboia Indian Residential Schools from 1948 to 1960. As a youth, he played senior hockey across Western Canada before moving north to direct a mineral exploration crew in the Northwest Territories, a formative experience that set him on a lifelong path toward self-discovery and healing.

Theodore graduated in civil engineering from the Northern Alberta Institute of Technology in 1973 and went on to work extensively in the corporate, government and First Nations sectors, including eleven years with the Assembly of Manitoba Chiefs as an advisor and executive director. He served in leadership and voluntary roles with organizations such as the Banff Centre for Management, Peace Hills Trust, the Indigenous Leadership Development Institute, the Manitoba Museum, and the Victorian Order of Nurses and Palliative Care Manitoba.

Theodore was a regular speaker and media commentator on residential schools and presented his bestselling memoir, Broken Circle: The Dark Legacy of Indian Residential Schools, to more than 1,500 audiences in Canada and the United States. He broke new ground by supporting other survivors and by seeking reconciliation directly with those who were perpetrators of his abuse. Theodore lived with his wife, Morgan, in Winnipeg, Manitoba, until his death in 2021.