Indra Sen MA, LL.B., PhD (13 May 1903 – 14 March 1994) was a devotee of Sri Aurobindo and The Mother, psychologist, author, and educator, and the founder of Integral psychology as an academic discipline.
Sen was born in the Jhelum District of Punjab (now part of Pakistan) in a Bengali Hindu family from Calcutta , but grew up in Delhi when his family moved there. From a young age he was interested in the spiritual quest. He completed a master's degree in both Philosophy and Psychology at the University of Delhi.
On 5 December 1928 he married Lilawati, and they had two children.
To further his studies, he enrolled at the University of Freiburg, in Germany, and obtained a PhD in Psychology. He also attended the lectures of Martin Heidegger and taught Indian Philosophy and Sanskrit at the University of Koenigsberg. at this time, his main interests were Hegel's philosophy, and Jung's psychology. He later returned to the University of Delhi. In December 1933 he met Jung when the latter visited Calcutta for the Indian Science Congress. Sen went on to become President of the psychology section of the Indian Science Congress, and was also a recipient of the Eastern-Western psychology lecture award of the Swami Pranavananda Psychology Trust
In 1934, he first travelled to Pondicherry with a friend, Surendranath Jauhar, and he met Sri Aurobindo and The Mother. After a number of visits, his wife became a devotee of The Mother.