1971 BMC Invitational – Singles

The 1971 BMC Invitational – Singles was an event of the 1971 BMC Invitational women's tennis tournament and was played on indoor carpet courts at the Civic Auditorium in San Francisco, California in the United States between January 6 and January 9, 1971. The draw comprised 16 players of which 4 were seeded. First-seeded Billie Jean King won the singles title by defeating second-seeded Rosie Casals in the final, 6–3, 6–4.

Ann Jones defeated Nancy Richey 6–4, 6–4 in the third place play-off.