RankNameCitizenshipAgeNet Worth ($bil)Residence 1 William Gates III United States 53 40.0 United States 2 Warren Buffett United States 78 37.0 United States 3 Carlos Slim Helu & family Mexico 69 35.0 Mexico 4 Lawrence Ellison United States 64 22.5 United States 5 Ingvar Kamprad & family Sweden 83 22.0 Switzerland 6 Karl Albrecht Germany 89 21.5 Germany 7 Mukesh Ambani India 51 19.5 India 8 Lakshmi Mittal India 58 19.3 United Kingdom 9 Theo Albrecht Germany 87 18.8 Germany 10 Amancio Ortega Spain 73 18.3 Spain 11 Jim Walton United States 61 17.8 United States 12 Alice Walton United States 59 17.6 United States 12 Christy Walton & family United States 54 17.6 United States 12 S Robson Walton United States 65 17.6 United States 15 Bernard Arnault France 60 16.5 France 16 Li Ka-shing Hong Kong 80 16.2 Hong Kong 17 Michael Bloomberg United States 67 16.0 United States 18 Stefan Persson Sweden 61 14.5 Sweden 19 Charles Koch United States 73 14.0 United States 19 David Koch United States 68 14.0 United States 21 Liliane Bettencourt France 86 13.4 France 22 Prince Alwaleed Bin Talal Alsaud Saudi Arabia 54 13.3 Saudi Arabia 23 Michael Otto & family Germany 65 13.2 Germany 24 David Thomson & family Canada 51 13.0 Canada 25 Michael Dell United States 44 12.3 United States 26 Donald Bren United States 76 12.0 United States 26 Sergey Brin United States 35 12.0 United States 26 Larry Page United States 36 12.0 United States 29 Steven Ballmer United States 53 11.0 United States 29 Gerald Cavendish Grosvenor & family United Kingdom 57 11.0 United Kingdom 29 George Soros United States 78 11.0 United States 32 Paul Allen United States 56 10.5 United States 32 Kwok family Hong Kong NA 10.5 Hong Kong 34 Anil Ambani India 49 10.1 India 35 Abigail Johnson United States 47 10.0 United States 35 Susanne Klatten Germany 46 10.0 Germany 35 Ronald Perelman United States 66 10.0 United States 35 Hans Rausing Sweden 83 10.0 United Kingdom 39 Birgit Rausing & family Sweden 85 9.9 Switzerland 40 Michele Ferrero & family Italy 82 9.5 Monaco 40 Mikhail Prokhorov Russia 43 9.5 Russia 40 Jack Taylor & family United States 86 9.5 United States 43 Mohammed Al Amoudi Saudi Arabia 63 9.0 Saudi Arabia 43 Anne Cox Chambers United States 89 9.0 United States 43 Carl Icahn United States 73 9.0 United States 43 George Kaiser United States 66 9.0 United States 43 Lee Shau Kee Hong Kong 81 9.0 Hong Kong 43 Forrest Mars Jr United States 77 9.0 United States 43 Jacqueline Mars United States 69 9.0 United States 43 John Mars United States 72 9.0 United States 51 Roman Abramovich Russia 42 8.5 Russia 52 Ernesto Bertarelli Switzerland 43 8.2 Switzerland 52 Philip Knight United States 71 8.2 United States 54 Nasser Al-Kharafi & family Kuwait 65 8.1 Kuwait 55 James Simons United States 70 8.0 United States 55 Alain & Gerard Wertheimer France NA 8.0 NA 57 Abdul Aziz Al Ghurair & family United Arab Emirates 55 7.8 United Arab Emirates 57 Vagit Alekperov Russia 58 7.8 Russia 59 Sunil Mittal & family India 51 7.7 India 60 Francois Pinault & family France 72 7.6 France 61 Eike Batista Brazil 52 7.5 Brazil 62 Mohamed Bin Issa Al Jaber Saudi Arabia 50 7.0 Saudi Arabia 62 Maan Al-Sanea Saudi Arabia 54 7.0 Saudi Arabia 62 Edward Johnson III United States 78 7.0 United States 62 Ananda Krishnan Malaysia 70 7.0 Malaysia 62 Robert Kuok Malaysia 85 7.0 Hong Kong 62 Joseph Safra Brazil 70 7.0 Brazil 68 Jeffrey Bezos United States 45 6.8 United States 69 August von Finck Germany 79 6.7 Switzerland 70 Silvio Berlusconi & family Italy 72 6.5 Italy 71 Leonardo Del Vecchio Italy 73 6.3 Italy 71 Curt Engelhorn Germany 82 6.3 Switzerland 71 Mikhail Fridman Russia 44 6.3 Russia 74 Sulaiman Al Rajhi Saudi Arabia 89 6.2 Saudi Arabia 75 James Goodnight United States 66 6.1 United States