A third generation Italian Canadian, Iannuzzi was born in Montreal. He moved to Toronto in 1954 and founded the Italian-Canadian newspaper Corriere Canadese. He produced multilingual TV programs for Toronto's Citytv from 1972 to 1979 and in 1979, he launched the world's first multilingual television station, CFMT-TV, initially broadcasting in 24 languages.
In 1989, he was awarded the Order of Ontario. In 1990, he was made a Member of the Order of Canada for being "a pioneer in multicultural communications and a significant contributor to Toronto's Italian community".
Through his ownership of Multimedia Nova Corporation he owned and published the following community newspapers throughout the Greater Toronto Area and in Quebec: