Organizing committee

 Conference General Chairs

• Stefano Leonardi, Sapienza University of Rome
• Alessandro Panconesi, Sapienza University of Rome

 Program Committee Chairs

• Paolo Ferragina, University of Pisa
• Aristides Gionis, Yahoo! Research, Barcelona 

 Local Chairs

• Aris Anagnostopoulos, Sapienza University of Rome
• Flavio Chierichetti, Sapienza University of Rome

 Publicity Chair and Web Presence

• Aris Anagnostopoulos, Sapienza University of Rome 

 Treasurer and Registration Chair

• Luca Becchetti, Sapienza University of Rome 

 Sponsor Chair

• Alessandro Panconesi, Sapienza University of Rome

 Proceedings Chair

• Fabrizio Silvestri, ISTI CNR, Pisa 

 Tutorial Chair

• Paolo Boldi, University of Milan

 Data Challenge Chairs

• Paolo Boldi, University of Milan
• Tamir Tassa, The Open University of Israel

 Workshop Chair

• Sebastiano Vigna, University of Milan 

 Doctoral Consortium Chairs

• Ricardo Baeza-Yates, Yahoo! Research, Barcelona
• Fabrizio Silvestri, ISTI CNR, Pisa

WSDM Steering Committee:

• Rakesh Agrawal, Microsoft, USA
• Ricardo Baeza-Yates,Yahoo!, University of Chile, Spain
• Ziv Bar-Yossef, Technion, Google, Israel
• Soumen Chakrabarti, IIT Bombay, India
• Monika Henzinger, EPFL, Google, Switzerland
• Jon Kleinberg, Cornell University, USA
• Marc Najork, Microsoft, USA