National Investment and Infrastructure Fund (NIIF) is a collaborative investment platform, anchored by the Government of India, focused on providing long-term capital to India's infrastructure sector. It invests across core infrastructure areas like transportation, energy, and digital infrastructure, as well as in growth equity through its Fund of Funds and Strategic Opportunities Fund. NIIF's unique proposition lies in its public-private partnership model, combining government backing with private sector efficiency to de-risk projects and attract large-scale international and domestic capital for commercially viable greenfield, brownfield, and stalled projects.