Hayakawa Senkichirō (早川 千吉郎, August 5, 1863 – October 14, 1922) was a bureaucrat, politician and entrepreneur in late Meiji and early Taishō period Empire of Japan.

After leaving public service, Hayakawa became director of the Mitsui Bank in 1901, and chairman of the board in 1909.

In May 1921, he also became President of the South Manchurian Railway Company, and died in office due to a stroke in October 1922.

Hayakawa was a close friend of Inazō Nitobe and Tsuda Umeko, and assisted their efforts in promoting the education of women in Japan through the establishment of a non-profit charity foundation.

Hayakawa, a prominent lay Buddhist, and student of the Zen abbot of Engaku-ji, Suzuki Daisetsu, also founded the Kochokan, a boarding house for samurai-descended students from Ishikawa Prefecture in Tokyo.