Prafulla Kumar Sen (died 24 March 1942), also known as Swami Satyananda Puri, was an Indian revolutionary and philosopher.
Encouraged by Tagore, he arrived in Thailand in 1932, and in 1939, he founded the Thai-Bharat Lodge, a cultural forum.
Singh and Puri were amongst the first people to negotiate with Fujiwara Iwaichi and the F Kikan regarding Japanese policies in an effort to obtain a commitment about the support of the movement that ultimately saw the foundation of the Indian Independence League and the Indian National Army.
[2] Both Puri and Pritam Singh were among the Indian delegates killed in a plane crash en route to the Tokyo conference in March 1942.
The Swami Satyananda Puri foundation was established by the Thai-Bharat Cultural Lodge in 1942 in his honour.