Jack Sim

Jack Sim, widely known as "Mr. Toilet," is a Singaporean entrepreneur, philanthropist, and leading global advocate for sanitation. Born in 1957, he rose from humble beginnings as a school dropout to become a serial entrepreneur, founding 16 successful businesses before attaining financial independence at age 40 and dedicating his life to social impact. In 2001, he founded the World Toilet Organization (WTO), a global non-profit committed to ensuring clean, safe toilets and sanitation for everyone, everywhere, and declared its founding date, November 19, as World Toilet Day — a day officially adopted by the United Nations in 2013 and now celebrated across all 193 member countries. Jack is also the founder of the BoP HUB and the Restroom Association of Singapore, and has been instrumental in building the global sanitation movement through advocacy, education, and sustainable community-based programs. His groundbreaking work in breaking the global taboo around toilets and sanitation earned him the Schwab Foundation Social Entrepreneur of the Year Award in 2001, an Ashoka Global Fellowship in 2007, and recognition as one of Time Magazine's Heroes of the Environment in 2008. A sought-after speaker and educator, Jack serves as Adjunct Associate Professor at the National University of Singapore (NUS), Teacher at Singularity University, and Social Entrepreneur-in-Residence at INSEAD Asia Campus, and holds a Master's in Public Administration. Author of "The Gumption of Mr. Toilet: Mobilizing the World to Effect Change," Jack's unique blend of humor and hard-hitting facts has made him one of the world's most effective communicators on global sanitation, public health, and systems-level social change.