- Indo-German Social Service Society, New Delhi
- Indo-National Socio-Economic Foundation, Bhubaneshwar
- Indo-Swedish Children’s Welfare trust, Bangalore
- Indoor Youth Force, Indore
- Indoriya Jan Kalyan Samaj Sewa Sansthan, New Delhi
- INDRA – Institute of National Development for Rural Area, Bhubaneswar
- Indra Kumar Shiksha Sameti, Betul Mp
- Indradhanu Club, Sambalpur
- Indrajeet Singh Memorial Foundation, Varanasi
- Indramani Uniyan Welfair Society, Gwalior
- Indranagar Ambedkar Seba Sangha, Agartala
- Indraprastha Shiksha Parishad, Delhi
- Indu Social & Rural Development Organisation, Jagatsinghpur
- Indus Core Education Foundation, Pune
- Industree Crafts Foundation, Bangalore
- Inetrnational Union for Health Promotion & Education, Bangalore
- INFENET, Dharmapuri
- Infinite Awareness Society, Khandwa
- Infinite Dimension Charitable Trust, Chennai
- Infinite Soul Trust, Bengaluru
- Info Campus, Patna
- Info International Educational and Welfare Society, Rishikesh
- Infoquest Education and Charitable Trust, Gandhi Nagar
- Information Cultural Development Society, Prakasam
- Information Technology Entrepreneurship Development Society, Trivandrum
- Ingram Seva Samiti, Sitapur
- Inidan Sewa Parishad, Raipur
- Inidan Welfare Society, Delhi
- Initiative for Peace and Development, Bandipora
- Initiative for Transportation & Developmental Programmes, New Delhi
- Initiative, Kolkata
- Initiatives : Women in Development, Chennai
- Initiatives for Development Foundation, Bengaluru
- Initiatives- Women in Development, Mumbai
- Iniya Udaiyam Charitable Trust, Tiruvallur
- Inner Vision, Mangaldai
- Inner Wheel Club of New Panvel
- Innerwheel Club of Bangalore West, Bangalore
- Innocent World Charitable Society, New Delhi
- Innovation and Science Promotion Foundation, Bengaluru
- Innovative Citizen Redressal Forum, Hyderabad
- Innovative Fashion & Welfare Society, Allahabad
- Innovator Factor Foundation, Bhubaneswar
- Innovators Club, Lucknow
- INRECA – International Rural Educational and Ultural Association, Dediapada
- INSA – Inter national Services Association, Bangalore
- INSEDA – Integrated Sustainable Energy & Ecological Development Association, New Delhi
- INSERURP – Indo National Socio Economic Research & Upliftment of Rural Poor, Bhawanipatna
- INSET – Initiative for Social & Economic Transformation, New Delhi
- INSS – Indranarayanpur Nazrul Smriti Sangha, Kolkata