Martin Varsavsky is an Argentine/Spanish entrepreneur, founder of seven companies in the past 20 years.

In 1984, while still in college, Varsavsky started his first business, Urban Capital Corporation, one of the early leaders of the loft movement in downtown Manhattan. His third business, Viatel Ltd., Varsavsky’s first venture into the world of telecom, was founded in 1990. This company is best known for inventing call back and building the first pan European fiber optic network ahead of liberalization. Martin Varsavsky’s best-known ventures were founded during the last decade. In 1998, he started Jazztel Telecomunicaciones (Jazztel), Spain’s second largest publicly traded telecom operator. In 1999 he founded Ya.com, Spain’s third largest internet web site/DSL provider that includes the second largest Spanish language web agency www.viajar.com. But not all of MV´s companies were successful. In 2000, he started Germany’s leading cloud computing company, Einsteinet, and the company was sold in 2003 at no return to him or investors.

Martin Varsavsky’s current venture is Fon. With over 7 million hotspots, Fon is the largest WiFi network in the world.