Tasuku Harada(原田 助) (December 20, 1863 – February 21, 1940) was a Japanese pastor and the president of Doshisha University from 1907 to 1919.

In 1896, Harada returned to Japan and headed several churches, edited the Tokyo-based Christian World, and continued travelling abroad.

Though there was a lot of anti-Japanese sentiment at the time because of the Oahu sugar strikes, he lectured in Honolulu and was offered a professorship at the University of Hawaii.

After returning to Kyoto to think about it, he accepted the offer and moved to Hawaii with his wife and four of his children.

While working in Hawaii, Harada was also affiliated with the Pan-Pacific Union (PPU) and the Institute of Pacific Relations (IPR).