From India
Satyendra Nath Bose
In 1924 he sent Einstein a new way of counting the states of light. Einstein translated it into German himself and had it published.
Particles called bosons are named after him.

Unknown author, Public domain, via Wikimedia Commons
Where you’ll meet Satyendra Nath Bose here
ProbabilityCounting
They turn up beside problems and lessons on these topics.
You might also like
P. C. Mahalanobis
He founded the Indian Statistical Institute in Kolkata in 1931.
The Mahalanobis distance measures how unusual a data point is, and is used from banking to biology. His birthday, 29 June, is India’s National Statistics Day.

Unknown author, Public domain, via Wikimedia Commons