| Birth Date: | 1909 |
| Death Date: | December 17, 1933 |
(1909 – December 17, 1933) was a Japanese swimmer who competed at the 1928 Summer Olympics in Amsterdam.
Born in Yamanashi Prefecture, Sada grew up in Nagoya and was a graduate of Meiji University. Sada was a member of the Japanese team which won the silver medal for the 4 × 200 meter freestyle relay event at the 1928 Amsterdam Olympics.After the Olympics, he went to work for Hankyu, but died due to a disease in 1933.