Sebastian Kimura (1565 – 10 September 1622) was a Japanese Catholic priest and member of the Society of Jesus.

Kimura's fluency in Japanese and cultural understanding made him adept at navigating the challenges faced by Christians during the period of persecution under Tokugawa Hidetada.

He could effectively disguise himself as a soldier, merchant, laborer, or even a physician to visit Christian households and deliver the sacraments to those imprisoned for their faith.

[citation needed] Despite efforts to remain hidden, Kimura was betrayed by a servant and apprehended in 1621 alongside his companions.

Imprisoned in Suzuta Prison, he found himself reunited with fellow Christians, including Father Carlo Spinola.