Bireswar Sen (1897–1974) was an Indian painter, writer, and teacher, who was influenced by the Bengal School of Art and Western modernism, but then later developed a unique visual language of miniatures.

He trained informally under modernist Nandalal Bose and Abanindranath, both of whom taught at the Indian Society of Oriental Art.

[6] It was on one of his trips in 1932, when he met the Russian artist Nicholas Roerich, who had settled in the Indian hill town of Naggar in Kullu, Himachal Pradesh.

Even in sheer physical terms, Bireswar’s work looked very different, small in scale as it was, and painted on paper in the wash technique," wrote Goswamy in an introductory essay.

After his death, Sen's popularity diminished, and remained so until 2010, when the first posthumous retrospective was held at the National Gallery of Modern Art, New Delhi.