The Indian Mathematical Society (IMS), founded in 1907, is the oldest and most prominent mathematical society in India. It has been instrumental in promoting mathematical research, organizing conferences and workshops, and publishing mathematical journals.

The main goal of the IMS was to foster mathematical research in India and create a platform for mathematicians to share their work and collaborate on new ideas.

The Ramanujan Mathematical Society (RMS), founded in 1985, is responsible for organizing the annual Ramanujan Prize, which recognizes outstanding contributions to mathematics by young mathematicians in India.

The Indian Mathematical Society publishes the 'Journal of the Indian Mathematical Society', which is a leading mathematical journal in India and showcases research articles from mathematicians worldwide.

The Ramanujan Mathematical Society played a crucial role in establishing the Srinivasa Ramanujan Institute of Mathematics (SRIM), a renowned research institute dedicated to advancing mathematical research in India.

The Mathematical Association of India (MAI) is responsible for organizing the annual 'Mathematical Olympiad' in India, which is a prestigious competition for high school students with a passion for mathematics.

The Association of Mathematics Teachers of India (AMTI) is dedicated to improving mathematics education in India at the school and college levels. It organizes workshops, conferences, and publishes resources to support mathematics teachers.

The Calcutta Mathematical Society publishes the 'Bulletin of the Calcutta Mathematical Society', which is a respected mathematical journal featuring research articles and expository papers.

The Madras Mathematical Society played a key role in the founding of the Institute of Mathematical Sciences (IMSc) in Chennai, a prominent research institute focused on advancing mathematical research in India.

The National Board of Higher Mathematics (NBHM) organizes the annual 'National Mathematics Day' in India to celebrate the contributions of Indian mathematicians and promote public awareness about the importance of mathematics.

The Society for Industrial and Applied Mathematics (India) is dedicated to fostering the application of mathematical modeling and optimization techniques in various fields, including industry, academia, and government.

The Indian Academy of Sciences publishes the 'Proceedings of the Indian Academy of Sciences - Mathematical Sciences', which is a respected journal featuring research articles and reviews in various areas of mathematics.

The Tata Institute of Fundamental Research (TIFR) played a pivotal role in the founding of the National Centre for Mathematics (NCM) in Mumbai, a renowned research center dedicated to advancing mathematical research in India.

The Society for Number Theory and Discrete Mathematics (India) organizes the annual 'International Conference on Number Theory and Discrete Mathematics' in India, which brings together researchers from around the world to share their work in these fields.

The Indian Society for History of Mathematics is dedicated to promoting the study and appreciation of the history of mathematics in India. It organizes conferences, workshops, and publishes books and journals on the subject.