Indian Institute of Quantity Surveyors (IIQS) is a professional body of Quantity Surveyors and its members include the professionals working in the field of Quantity Surveying, Cost management, Commercial Management, Contract Management, Property Development, Engineering and other related field. This professional body was formed in December 1998.

Ever since its inception, regular monthly Continuing Professional Development events, seminars are convened for its members. It helped the members to grow academically as well as professionally. Indian Institute of Quantity Surveyors (IIQS), incorporated under Section 25 of the Companies Act 1956 (No. 1 of 1956) in India on 14 October 2011 and its Corporate Identity Number is U74120MH2011NPL223019: 2011-2012.