Satoko Tanaka (田中 聡子, Tanaka Satoko, born February 3, 1942) is a retired Japanese backstroke swimmer.

She won individual bronze in 1960 and finished fourth in both events in 1964.

[1] Between 1959 and 1964 she set 10 world records in the 200 m backstroke, but did not have a chance to compete in this discipline.

Tanaka held the national records in the 100 m and 200 m backstroke for 12 years.

In retirement for many decades she worked as a swimming coach, and competed in the masters category.