In this paper, we show that alternative finance (e.g. private equity, crowdfunding and venture capital) is a key source of funding for firms that are affected by natural disasters. Using data on a large sample of US companies from 2010 to 2019, we provide robust empirical evidence that private funding increases within 3 months after the occurrence of a natural disaster. Panel data analysis at state level shows that extreme events cause at least an average increase of funding from alternative finance by 47% relative to firms in non-affected states. We also find that size, reliance on physical assets and age improve access to alternative finance after adverse natural events. Our empirical evidence highlights the key role of private lenders in providing financial resources to affected firms after extreme exogenous events. Disclaimer: This paper's findings, interpretations and conclusions are entirely those of the authors and do not necessarily represent the views of the World Bank, their Executive Directors or the countries they represent. We thank the editors of the British Journal of Management special issue: Douglas Cumming, Pawan Budhar and Geoffrey Wood. We would also like to thank the two anonymous referees for providing us with very constructive feedback and valuable comments. We thank for useful comments the participants at the conference on 'Entrepreneurial Finance in Honour of Mike Wright' and especially our discussant, Maimuna Akter.