Ferdinand, who was part of England's World Cup squad in 1998, believes the Spurs duo will step up to the plate at the world's biggest tournament.
"I've been with both of them all season and they are coming off a fantastic season at Spurs and qualifying for the Champions League, so they are going into the World Cup on a high," Ferdinand told the Spurs website.
"If you look at Peter's record for England (21 goals in 38 caps), he must feel every time he pulls on an England shirt he's going to score a goal.
"It's a fantastic record. People argue he's only scored against lesser sides, but he can only score against the teams he plays against. Other players also play against these so-called lesser sides and don't score, so you can't take his record for granted. He's done superbly well and deserves his place in the squad.
"Jermain is seen as an impact player at the moment and he will always have the ability to come off the bench and score goals.
"He went through a bit of a lull at the end of the season but when he's on a high, he'll score goals all day long. As I said, qualifying for the Champions League here at Spurs means he will be on a high and the World Cup lifts players anyway.
"I've no qualms that if they get onto the field, they will do the club and country proud."