"I can deny that it's not happening," Ford told DeGeneres when asked about the reports of another installment.
"So it is happening," the host confirmed confirmed.
Indeed, it is, Ford said.
"It's going to be fun. I am excited," he said. "They're great fun to make."
The last film from the Indiana Jones film franchise was 2008's "Indiana Jones and the Kingdom of the Crystal Skull," which came almost 20 years after the third movie.
"Raiders of the Lost Ark," "Indiana Jones and the Temple of Doom" and "Indiana Jones and the Last Crusade" were released in 1981, 1984 and 1989, respectively.
In his interview on CBS, Ford said he feels a sense of "responsibility" any time he returns to an iconic role.
"I feel obliged to make sure that our efforts are as ambitious as they were when we started," he said.