I would have to say Chris Johnson of the Tenessee Titans, because he once ran a long touchdown run at the speed of 27.3 miles per hour. That is faster than Usain Bolt (world's fastest man), and Johnson was running with 20 pounds of padding on him.
the fastest man in the NFL is William Ole's he managed to run as fast as 50mph
many people refer to Devin Hester as the fastest man in the NFL capable of running a 4.26 40 yard dash.
Devin Hester
Bob Hayes
Jordie Nelson
Darrell Green.
Alexander Wright
4.24 at the NFL Combine (Fastest at combine history). not 4.24 is correct and it's the second fastest Safety in this years draft beat him out
Darrell Green ran an unofficial 4.09 40 yard dash in training camp in 1986 for the Washington Redskins. He is considered by many as one of the best corners of all time. Many see him as the fastest man in NFL history, having won several NFL's Fastest Man competitions. Bo Jackson is second ran a 4.12 Deion Sanders is third ran 4.17 and 4.57 backwards at Florida State University Pro Day
he was the fastest, running a 4.2 forty yard dash.
kaleab fesseha
Tyson Gay