Adimai Penn (transl. Slave Woman) is a 1969 Indian Tamil-language action adventure film directed by K. Shankar and produced by M. G. Ramachandran and R. M. Veerappan. The film stars Ramachandran and Jayalalithaa, with Ashokan, Pandari Bai, Rajasree, Manohar, Chandrababu and Cho in supporting roles. It revolves around the efforts of a deceased king's son to free the enslaved people of a kingdom from their tyrant king.

Ramachandran had the desire to make Adimai Penn as early as 1963. The project entered production with him directing and starring, B. Saroja Devi and K. R. Vijaya co-starring and P. N. Sundaram as cinematographer, but was dropped after some progress. When revived with a new story, it had a largely new cast and crew while Ramachandran remained as the star. Filming took place primarily in Jaipur, Rajasthan, and was completed within 100 working days.

Adimai Penn was released on 1 May 1969 and became a box office success, with a theatrical run of over 175 days, and a turning point in Ramachandran's career. It won many awards, including the Filmfare Award for Best Tamil Film, and three Tamil Nadu State Film Awards, including Best Film (First Prize) and Best Female Character Artiste for Pandari Bai. A digitally restored version of the film was released on 14 July 2017