The man fell over the edge of the canyon's rim, The Associated Press reported.
He was at the Eagle Point observation area as part of a tour group.
Both the observation area and the Skywalk have been closed, David Leibowitz, a spokesman for Eagle Point, told CNN.
A helicopter search began shortly after the man fell, officials told CNN.
His body was recovered by helicopter, about a 1,000 feet into the canyon, the AP reported.
Earlier in the week, another guest died according to National Park Service officials. Not many details have been released, but rangers and special agents responded to a visitor fatality in the southern area of the canyon, CNN reported.
The person, who is believed to be a foreign national, was found dead in a wooded area away from the rim, south of Grand Canyon Village, officials told the AP.
The Coconino County Medical Examiner is working with the National Park Service concerning the second man's death, CNN reported.
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