Koirala (Nepali: कोइराला) is a Khatri/Chettri surname of Nepal as well as brahmin. All Koirala share the same gotra, Moudgalya (Mudgal), which means all of them share the same forefather, so a Koirala can't marry another Koirala.
It can refer to:
Koirala family, a dominating family in Nepalese politicsAnuradha Koirala, Nepalese social activist, founder and director of Maiti NepalBhagawan Koirala (b. 1960), Executive Director & Senior Consultant Cardiac SurgeonBishweshwar Prasad Koirala (B.P. Koirala) (1914–1982) , Prime Minister of Nepal from 1959 to 1960Bharat Koirala, winner of the 2002 Ramon Magsaysay Award for JournalismGirija Prasad Koirala (1925–2010), five times Prime Minister of Nepal in the 1990's and 2000's, Head of State from 2007 to 2008Krishna Prasad Koirala (d. 1943), political leader of NepalKulchandar Koirala, writerManisha Koirala (b. 1970), Indian Bollywood actressMatrika Prasad Koirala (1912–1997), Prime Minister of Nepal from 1951 to 1952 and from 1953 to 1955Prakash Koirala, Nepalese politicianRaj Ballav Koirala (b. 1982), Nepalese actorShashanka Koirala, Nepalese politicianSiddharth Koirala, Nepalese film actorSujata Koirala (b. 1954), Deputy Prime Minister of NepalSushil Koirala (1939–2016), Prime Minister of Nepal from 2014 to 2015Tarini Prasad Koirala (1923–1973), Nepalse politician, journalist and writerSaradha Koirala, Poet and Writer New Zealand, Australiautsav koirala, Poet and Writer New Zealand, Australia