She says she was abused as an 8-year-old child and explains why therapy was important for her recovery.
When the host pressed the iconic star as to why she didn't say anything when she first heard about his allegedly abusive behavior, including rape, Fonda expressed regret.
"I found out about Harvey a year ago, and I'm ashamed I didn't say anything back then", she told Amanpour. "He made things very hard for me for years", she told the New Yorker.
"I'm glad it's coming out, I'm so proud of those fellow actors that are speaking up. And when they're famous and powerful like Harvey, then it gets talked about and so it's really important that those women have been fearless enough to come out".
"I think they should all go to jail, and you know let's put Bill Cosby in there... but the question is not just Hollywood, you know, this is epidemic", Fonda, an Academy Award victor, told CNBC's Tania Bryer in an interview that aired Friday.
However, she cautions against any belief that this issue is unique to Hollywood. It's very, very common, just as it is in every country of the world, in every aspect.in business, in government. "Let's not think that this is some unique, horrific..." "It's this male entitlement - in Hollywood, and everywhere".
A long-time campaigner for women's rights, Fonda also sought to focus the spotlight beyond Hollywood, noting the similar accusations levelled at other public figures like US President Donald Trump and former International Monetary Fund head Dominique Strauss-Kahn.
Be sure to catch Jane's FULL sit down with Amanpour when it airs on Friday. "Because a lot of men see, well, our president does it and he got elected, even after people discovered that he was an abuser so I'm just going to go ahead and do what I want to do".