The Ramanujan National Mathematics Challenge (RNMC) is a national-level competition in India organized annually to honor the great mathematician Srinivasa Ramanujan. The competition is designed to test mathematical aptitude, logical reasoning, and problem-solving skills of students. It aims to encourage young minds towards higher studies in mathematics and related fields, while also identifying and nurturing talent at the school and university levels.

It is usually organized around December 22, which is celebrated as National Mathematics Day in India (Ramanujan’s birthday).