The 1975 Canadian Soccer League season was the fifty-second season for the National Soccer League (NSL) which operated under the Canadian Soccer League (CSL) name for the season. The season began in April and concluded in late October with Toronto Italia securing a double (NSL Championship, and First Division title). Italia would also win the Canadian Open Cup by defeating the Challenge Trophy champions London Boxing and Athletic Club of Victoria from British Columbia. The Serbian White Eagles were the NSL Cup winners and the Canadian representative for the 1975 CONCACAF Champions' Cup.