Juan Pablo Montoya and Tony Kanaan will be competing in the 2017 edition of the Race Of Champions in Miami, Florida.
Kanaan and Montoya, both 41, hail from the IndyCar series, having finished this past season in seventh and eighth respectively.
Brazil's Kanaan made his first and only ROC appearance so far in 2004, the year when he was crowned IndyCar champion.
Partnering compatriot Felipe Massa, he made it to the semi-finals, where the Brazilian duo were knocked out by Jean Alesi and Sebastien Loeb.
"I absolutely loved when I raced at the Race Of Champions in France back in 2004 and I always wanted to do it again," he said.
"I live in Miami, so having the race here in my backyard is the perfect opportunity to be part of it and to race against the biggest names from motorsport around the world."
For Colombia's Montoya, 1999 CART champion and a winner of seven Formula 1 grands prix, Miami will represent a Race Of Champions debut.
"I’m really looking forward to competing in my first Race Of Champions. It’s an event I’ve always wanted to do, and to be able to race here at home in Miami makes it even more special," said Montoya.
“The Race Of Champions is such a unique event, bringing together the top drivers from the main series around the world and from different generations.
"When I was racing in Formula 1, Sebastian Vettel was a young talent in Formula BMW, now he is a four-time World Champion…"
The announcement of Montoya and Kanaan brings the total number of drivers confirmed for the Marlins Park event up to eight, as they join Vettel, Kurt Busch, Petter Solberg, Tom Kristensen, Travis Pastrana and fellow IndyCar driver and Indy 500 winner Ryan Hunter-Reay.