The Oscar-winning actress learned details of fellow actress and friend Rosanna Arquette's encounter with the movie mogul.
"I found out about Harvey about a year ago and I'm ashamed that I didn't say anything right then," Fonda told CNN. "I was not that bold because I guess it hadn't happen to me and so I didn't feel it was my place."
Although Fonda said she has experienced sexual harassment on set and in the workplace, the Hollywood mogul never targeted her since she met him much later in the span of her career.
"I only met Harvey when I was old," the actress added. "And Harvey goes for young, because that's more vulnerable... It's very, very common. Bill Cosby, you know, another example of Hollywood, but Dominique Scarfone for example, he's not in Hollywood, but this is not unique. This goes on at the most horrendous high levels."
But Fonda is relieved the allegations against Weinstein are being exposed and she's proud of the brave women who are coming forward.
"I'm so proud of those fellow actors that are speaking up and I know that it has taken a long time. It's a very, very, very hard thing to do. You don't get anything out of it as the person who has been victimized, but it's important that it came out," she said. "But let's not think that this is some unique, horrific - this goes on all the time. It's this male entitlement in Hollywood and everywhere in offices and businesses all over the world, in bars, in restaurants, in stores. Women are assaulted, abused , harassed and seen for just being sexual objects that are for a man's desire instead of as whole human beings."