Satyashodhak Samaj is a social reform society founded by Jyotirao Phule in Pune, India, on 24 September 1873. Its purpose was to liberate the less privileged in the then-prevailing society such as women, Shudra, and Dalit from exploitation and oppression.

Jyotirao's wife Savitribai was the head of the women's section of the society.

Through his writing and work, Jyotirao advocated against the caste system and the illogical and orthodox status of Brahmin.

Phule had also started a newspaper Deenbandhu which provided the voice for the views of the Samaj.

Jyotirao Phule's book Gulamgiri is dedicated to the pain, suffering and hardship faced by slaves.