Last year the actor presented Top Gear: The Races, a stand-alone spin-off made for BBC Store, the corporation's digital download service.
According to the BBC, he will join production on the new series of Top Gear "immediately".
Stephen Mangan, LeBlanc's co-star on Episodes, responded to the news by suggesting he is "The Stig" in the picture released with the BBC's press release.
"Still annoyed they made me wear that helmet," the British actor joked on Twitter.
Last year LeBlanc revealed he had "one more season of Episodes to shoot.... starting in April".
The actor won a Golden Globe in 2013 for his role in the sitcom, a co-production with Showtime, in which he plays an exaggerated version of himself for comic effect.
Steve Berry, who co-presented Top Gear in the 1990s, told BBC News that LeBlanc was "an odd choice", despite having "international recognition".
"It does seem odd that the BBC will use an actor in a factual entertainment show," he said, suggesting that the strength of the show's most recent line-up lay in the fact that they were "all experienced motoring journalists".
"When Jeremy Clarkson gives you an opinion you can respect it," he went on. "When an actor says that line, does it have that authority?"