There are two, Pioneer 10 and Pioneer 11.

Pioneer 10 was launched 3rd March 1972

Pioneer 10 (also known as Pioneer F) is a robotic space probe that was planned as the first interplanetary mission to Jupiter.

The first spacecraft to visit and explore Jupiter was the Pioneer 10 in 1973. The Pioneer 10 was created by NASA and made in the U.S.

I believe it was the Pioneer 10, sometimes also known as Pioneer F.

It was the first spacecraft to complete an interplanetary mission to Jupiter.