The former American Idol star will perform 'Music Again' on the March 2 instalment, according to the upcoming events section of his website.
It was previously reported by Gossip Cop that Jamie Foxx will also be a guest for Leno's return to late-night, following his stint on primetime.
NBC has yet to comment on either rumour.
Leno's jazz guitarist Kevin Eubanks recently played down speculation that he is leaving the show, but admitted that he will be "around less" when the series returns.
The Tonight Show returns March 1.