Floyd Mayweather -- Dominates Forbes List ... NFL Players Don't Crack Top 10

Floyd Mayweather has done it again ... sitting on the very top of Forbes' 2015 highest paid athletes in the world list ... a list that contains ZERO players from the NFL.

Mayweather made roughly $300 MILLION in 2015 ... almost doubling the #2 guy Manny Pacquiao ($160 million) and #3 Cristiano Ronaldo ($79.6).

They're followed by Lionel Messi ($73.8), Roger Federer ($67), LeBron ($64.8), Kevin Durant ($54.1), Phil Mickelson ($50.8), Tiger Woods ($50.6) and Kobe Bryant ($49.5).

The list is essentially comprised of the same names as last year with one noticeable difference ... the one NFL guy from '14, Matt Ryan, has dropped off.