Scarlett Johansson gave an insider's clue about who might replace Hoda Kotb as Jenna Bush Hager‘s co-host on the Today show.

Scarlett Johansson has discussed who she believes ... also reflected on the show's previous cohost Hoda Kotb, with the outlet reporting that Johansson referred to her as "a mentor." ...

But Scarlett Johansson says being part of the TODAY ... Jenna has been co-hosting with a rotating group of people after Hoda ...

That raunchy joke was even discussed on an episode of Jenna & Friends, which Scarlett Johansson joined shortly after Hoda ...

NBC has not made any decisions on who will replace Hoda Kotb and become Jenna Bush ... alongside several A-Listers –– including Scarlett Johansson, Dwyane Wade, Taraji P.