The Top 10 Most Powerful figures in the Art World 2011

Art Review Magazine based this list on commercial clout, intellectual influence and popularity.:

1. Ai Weiwei - Chinese artist (new to top 10)
2. Hans Ulrich Obrist & Julia Peyton-Jones - Switzerland/curator
3. Glenn D. Lowry - United States/museum director
4. Larry Gagosian - United States/gallerist (down from 1st)
5. Anton Vidokle, Julieta Aranda & Brian Kuan Wood - Russian/Mexican/American Artsits (new to top 10)
6. Nicholas Serota- Britain/museum director
7. Cindy Sherman- American artist (new to top 10)
8. Iwan Wirth - Switzerland/gallerist
9. David Zwirner - Germany/gallerist
10. Beatrix Ruf - German Musuem Director (new to top 10)

Wall Street Journal 2011 Read about some of the top collectors buying strategies

Forbes Top Billionaire Collectors 2010

1. Roman Abramovich, Russia steel czar
2. Bernard Arnault France, Louis Vuitton, Moet & Chandon brands
3. François Pinault, French retail giant
4. Joseph Lau,  Hong Kong real estate
5. Philip S. Niarchos Greece shipping magnate
6. Eli Broad, America, home building and insurance tycoon
7. Debra and Leon Black, Ameroican art collector
8. Alexandra and Steve Cohen, American hedge fund king
9. Emily and Mitchell Rales, America, equity group holding company

Plus:
Art+Auction Most Powerful People in 2009