#1 Henri Cartier-Bresson – The father of modern photojournalism, he coined the phrase – “The defining moment.”
#2 Sebastian Salgado – Famous for his photography of the mines of Serra Palada in Brazil.
#3 W. Eugene Smith – If only for his story about the Minemata disease he would be on this list.Tomoko Uemura in Her Bath
#4 Richard Avedon - Dovima with the Elephants « Iconic Photos
#5 Ansel Adams Moonrise, Hernandez, New Mexico
#6 Irving Penn- Known for his portraiture and his fashion photography.Irving Penn Photographs – The International Photography Index.
#7 Robert Frank – The Americans
#8 Annie Liebowitz – For her reinvention of the portrait.
#9 David Muench – The best landscape photographer working in color.
#10 Jerry Uelsman – Uelsman’s magical darkroom skills put him on this list.
I expect that everyone could come up with a top ten list. Here are some names that would easily fit on this one if you wished. Weegee, Steichen, Evans, Parks, Lange, Allard, Capa, Brady, O’Sullivan, Jackson, Ritz, Newton, Strand, White, Karsh, Weston, La Chappel, Hill, Daguerre, Lik.