(Joe Rosenthal / ©Associated Press) A photo colorized to show all six men - Ira Hayes (red), Franklin Sousley (violet), John Bradley (Green), Harlon Block (Yellow), Michael Strank (brown), Rene Gagnon (teal)

Harlon Block (November 6, 1924 - March 1, 1945) was a Marine during World War II. He was photographed in Raising the Flag on Iwo Jima during the Battle of Iwo Jima.

Block was born in Yorktown, Texas, to Ed and Belle Block, to a family of Seventh day-Adventists.

After his death, there was some controversy as to who was in the photograph, when another man's family claimed it was him. Eventually Ira Hayes came forth to settle all doubts that it was Block.