This roadmap outlines a possible transition path for the Indian cement industry to support the global goal of halving carbon dioxide (CO2) emissions by 2050. It estimates that the Indian cement industry would reduce its direct CO2 emissions intensity to 0.35tCO2/t cement in 2050, about 45 per cent lower than current levels. Despite this, the total emissions would grow from the current 137 MtCO2 to between 275 MtCO2 and 468 MtCO2 in 2050 due to rapid growth in cement demand and economic growth in India. The vision is ambitious but realistic. This roadmap is attainable only with a supportive policy framework and appropriate financial resources invested over the long term. It outlines the policies, financial requirements, technical changes and recommendations to support research and development and future decision-making for investment.