Pearson is one of the faces of British disability sport winning triple equestrian gold at the 2000, 2004 and 2008 Games.
A repeat of that performance in Greenwich, venue for the Paralympic equestrian events, would see him overtake athlete Tanni Grey Thompson and swimmer Dave Roberts, who both have 11 career golds at the Games.
However, swimmer Mike Kenny - with 16 golds - remains Great Britain's most successful Paralympic athlete.
“It’s a novel thought that’s in the back of my mind, but that’s as far as it goes,” said Pearson, who will be riding his horse Gentleman for a second successive Games.
“If it happens I will probably be very happy, but I won’t be depressed if I don’t win the medals I’d like to. I will just focus on Rio.
“I don’t put myself under undue pressure before a Games. When I’m riding I’m so focused on the job in hand."
Pearson, 38, rates the five-strong equestrian team for London 2012 as the best yet.
Natasha Baker and Sophie Wells are both newcomers and will join forces with Pearson plus experienced hands Sophie Christiansen and Deborah Criddle.
The team as a whole have been set a testing target of a minimum seven medals from ten individual events, plus the task of defending the team title they have held since the introduction of equestrian events to the Paralympics in Sydney 12 years ago.
“The selectors chose us because they believed in us. We will just do our best and hope that will deliver some medals," said Baker.
“It’s been great talking to these three guys – they’ve got a massive wealth of experience between them – but in a way it’s all new for all five of us in that it is a home Games; there will be a different aspect that none of us have had before."
Great Britain had never won a dressage medal at the Olympics but Charlotte Dujardin claimed double gold this month, including joining forces with Carl Hester and Laura Bechtolsheimer to win the team title.
And Wells, who overcame an allergy to horses as a youngster to become the first rider with a disability to compete on a non-disability team at the 2010 European Young Rider Championships, can't wait to follow their lead.
“It’s a really exciting time to be part of British Dressage," she said.
"The able-bodied team did really well and that inspires and motivates us to do the same.
"It was incredible to see the crowd and how much support they got and it’s going to be the same hopefully for us as well."