Yoga Rahasya is a quarterly publication of the Ramamani Iyengar Memorial Yoga Institute (RIMYI), Pune and the Light on Yoga Research Trust (LOYRT), Mumbai, India. It is published on the occasions of the Annual Day of RIMYI, Hanuman Jayanti, Guru Purnima and Patanjali Jayanti.

The aim of Yoga Rahasya is to share the essence of Yogacharya BKS Iyengar's teachings. This journal contains original articles and transcripts of talks by Guruji Iyengar, Geeta and Prashant Iyengar on philosophy, psychology, science and art of yoga and life. It also includes articles by his students on their experiences, practical details on the practice of asanas as well as treating chronic ailments through yoga.