The 1969–70 Serie A basketball championship was the 47th season of the Serie A, the highest professional basketball league in Italy. The regular season ran from 2 November 1969 to 12 April 1970, twelve teams played 22 games each. The team ranked first at the end of the season, Ignis Varese, was crowned champion (earning the single spot in the European Champions Cup) whilst the two lowest ranked teams, Splugen Brau Gorizia and Brill Cagliari, were relegated to the Serie A. Ignis Varese won their second consecutive league title, fourth overall.