Johnson, who has gone on to make a name for himself as an informed and engaged pundit and commentator on his sport, will meet with men's and women's teams at Sevens Stadium, as well as potentially mingle with fans.
'I'm looking forward to heading to Dubai, meeting the sport’s fans and, of course, the players,' the 400-metre world record holder said. 'From all my years in athletics, I know just what it means to compete for your country at the highest level, particularly in an Olympic Games. The start of this season is a huge moment for them and it’s a huge moment for the sport.
'Dubai, as the starting block for the HSBC World Rugby Sevens Series, is sure to be a supercharged tournament that will set the tone for ten ground breaking months of rugby, so I can’t wait to get involved.'
The annual Sevens tournament is one of the highlights of the social and sporting calendar in the Middle East, and sees international teams - as well as some amateurs - compete for the coveted event title and also for points as part of the 10-month series.
After Dubai, the HSBC World Rugby Sevens Series moves on to Hong Kong, London, Wellington, Las Vega, Cape Town, Sydney, Vancouver, Singapore and Paris.
This year, with over 100,000 fans expected to attend the whole weekend, netball will also feature.