Ananthasayanam (Leaning posture with the head rested on one's hand) is a 1942 Tamil language film produced by and starring Krishnaswami Subrahmanyam in the lead role.

The film also featured S. D. Subbulakshmi and M. V. Rajamma as the female leads with G. Pattu Iyer and V. N. Janaki playing supporting roles.

Ananthasayanam marked the acting debut of Krishnaswami Subrahmanyam, who also directed and produced the film under his own banner Madras United Artistes Corporation.

Durai incorporated into the screenplay information and hymns on Anantha Padmanabhaswamy Palmyra leaf manuscripts that were preserved by the territory of Travancore.

[1] V. S. Parthasarathy Iyengar composed the film's music and score while Papanasam Sivan and Rajagopal Iyer wrote the lyrics for the songs.