S. N. Khandelwal is a revered scholar known for his deep understanding of Sanskrit and Indian philosophical traditions, particularly in the domain of Tantra. His works include translations and commentaries on various Tantric scriptures, such as सिध्दनागार्जुनतन्त्रम् (Siddha Nagarjuna Tantram) with Sanskrit text and Hindi translation, and सर्वोल्लासतन्त्रम (Sarvollasatantram) by Srimat Sarvanandanatha.