The new allegations, published yesterday in the New Yorker magazine, were reportedly made by multiple women, including Asia Argento, an Italian film actress and director, US actress Rosanna Arquette and former aspiring actress Lucia Evans.
Argento is one of three women cited in the article who accuse Weinstein of rape.
Three other women told the New Yorker that Weinstein had sexually harassed or assaulted them.
Sallie Hofmeister, a spokeswoman for Weinstein, denied the new allegations.
“Any allegations of non-consensual sex are unequivocally denied by Weinstein,” Hofmeister said in a statement.
The statement also said that Weinstain has started counselling and that he hopes he will be given “a second chance.”
Weinstein was fired on Sunday from the production company he co-founded with his brother Bob in 2005.
Meanwhile critics called for a boycott of American fashion designer Donna Karan’s products yesterday, after she defended Harvey Weinstein.
On Sunday, Karan had suggested women had been seeking a reaction from Weinstein by dressing provocatively.
After a barrage of criticism, she apologised, but the condemnation kept pouring in.
“I think he’s being looked at right now as a symbol, not necessarily as him. I know his wife, I think they’re wonderful people. Harvey has done some amazing things,” the founder of DKNY said about Weinstein on the red carpet for the CineFashion Film Awards in Los Angeles.
“It’s not Harvey Weinstein. You look at everything all over the world today and how women are dressing, what they’re asking by just presenting themselves the way they do. What are they asking for? Trouble.”
The comments triggered outrage, including from actress Rose McGowan, whom The New York Times said had reached a settlement with Weinstein in 1997 after the producer had behaved inappropriately toward her.
“Donna Karan you are a DEPLORABLE,” McGowan, 44, tweeted. “Aiding and abetting is a moral crime. You are scum in a fancy dress.”
Karan later apologised, saying her red carpet statements were taken out of context and “not representative of how I feel or what I believe.”
“I believe that sexual harassment is NOT acceptable and this is an issue that MUST be addressed once and for all regardless of the individual,” she wrote.
“I am truly sorry to anyone that I offended and everyone that has ever been a victim.”