Gentile Tondino was born in Montréal, Québec in 1923. He apprenticed with the Canadian painter Adam Sherriff Scott between 1942-47, and studied for three years at the Montréal Museum of Fine Arts School of Art and Design under artist and art educator Arthur Lismer.
He began teaching at the Montréal Museum School in 1952, working in the adult and children's programs with Lismer and Audrey Taylor. He also taught the Museum's basic and advanced courses in drawing and painting until 1967.
In 1959 he took a position at McGill teaching freehand drawing in the School of Architecture. Shortly after, in 1973, he was cross appointed to the Faculty of Education, where he taught Drawing and Painting, Basic Design, and studio courses part of the graduate program.
He retired in 1999 after four decades at McGill.
His own drawings and paintings have been exhibited widely, in galleries and museums across Canada, Australia, Belgium, and Bermuda.
His work is part of many corportae, private, and public collections such as the Montréal Museum of Fine Arts, the National Gallery of Canada, Shell Canada, the Ontario Heritage Foundation, and McGill University, among others.
In 1955, he was elected to the Canadian Group of Painters, and in 1962, he was elected to the Royal Canadian Academy, in 1968, he was named Academician. He received the Faculty of Engineering Alumni Award for Outstanding Teaching in 1997.
He died in 2001.