Dr. D.R. Gadgil (Dhananjay Ramchandra Gadgil) was the Deputy Chairman of the Planning Commission of India during the first two years of the Fourth Five-Year Plan.
The Fourth Five-Year Plan spanned from 1969 to 1974. Dr. Gadgil served as the Deputy Chairman from September 2, 1967, until May 1, 1971. Under his leadership, the strategy for this plan was formulated, leading it to be widely known as the "Gadgil Strategy". He was also responsible for introducing the famous Gadgil Formula, which determined how central financial assistance was allocated to different states in India.
Following his tenure, C. Subramaniam took over the role in May 1971 for the remaining years of the plan.