India Index Services & Products Ltd. (IISL) is a joint venture between the National Stock Exchange of India Ltd. (NSE) and CRISIL Ltd. (formerly the Credit Rating Information Services of India Limited). IISL has been formed with the objective of providing a variety of indices and index related services and products for the capital markets.

IISL has a licensing and marketing agreement with Standard and Poor's (S&P), the world's leading provider of investible equity indices, for co-branding IISL's equity indices.