The 1970 Paris Open – Singles was an event of the 1970 Paris Open men's tennis tournament that was played at the Palais Omnisports in Paris, France from 9 November until 15 November 1970.

The draw comprised 32 players and eight were seeded.

Third-seeded Arthur Ashe won the singles title, defeating unseeded Marty Riessen in the final, 7–6, 6–4, 6–3.

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.