Niklas Zennström (Swedish pronunciation: ['n?k?las ?s?n?strœm] (listen); born 16 February 1966) is a Swedish billionaire entrepreneur best known for founding several high-profile online ventures with Janus Friis including Skype and Kazaa.
More recently he founded the technology investment firm Atomico and has become a significant figurehead for entrepreneurs in the tech sector.
Zennström is also the co-founder of the charity organization Zennström Philanthropies.