Woods was named as one of Jim Furyk’s captain’s picks earlier this week ahead of the 42nd Ryder Cup, to be held at Le Golf National in France from 28-30 September.
Woods is back from an injury layoff and competing at the top of the game again.
He missed the last two Ryder Cups, last playing at Medinah in 2012, but after impressing this year is back in the team and will pose a big threat to Europe.
Spieth even thinks his presence could defuse the home crowd and reduce Europe’s advantage.
“I think the home crowd will help,” Spieth said.
“If I were a young European player and I was going to play the Ryder Cup in the United States, you’ve got an away game, you’re playing against Tiger and you haven’t really seen a whole lot of him or at least him playing as well as he’s playing right now.
“Healthy Tiger, that would be something that would make it more difficult, absolutely. He adds something to it.
“He certainly moves the needle in every sense of the game. So it’s good to have him in our corner for sure.”
Spieth is likely to be paired with Patrick Read again but admits he’d honoured to play with Woods or Phil Mickelson, who also made the team through a captain’s pick.
“To get an opportunity to play with Tiger or Phil in a Ryder Cup match, it’s stuff you tell your grandkids about some day,” Spieth said.
“I’m not sure if I’m going to get that opportunity. I’m not sure if that’s the way it works within the team, but we’re going to figure out who is going to be the best fit for everyone and I think we’re going to be more prepared earlier than we’ve ever been going overseas to a Ryder Cup or Presidents Cup.”