"I want to add my voice of support for the women who have had the courage to speak out against Harvey Weinstein," wrote Gosling in a post on his Twitter account.
"Like most people in Hollywood, I have worked with him, and I am deeply disappointed in myself for being so oblivious to the devastating experiences of sexual harassment and abuse."
"He is emblematic of a systematic problem. Men should stand with women and work together until there is real accountability and change."
In the days since a New York Times article alleged that Weinstein paid off numerous sexual harassment accusers, stars like Cara Delevingne, Gwyneth Paltrow, Rose McGowan, and Angelina Jolie have all come forward to allege that Weinstein harassed them.
"Any allegations of non-consensual sex are unequivocally denied by Mr. Weinstein. Mr. Weinstein has further confirmed that there were never any acts of retaliation against any women for refusing his advances. He will not be available for further comments, as he is taking the time to focus on his family, on getting counselling and rebuilding his life."
If you have experienced sexual violence of any kind and are in need of support, please visit Rape Crisis or call 0808 802 9999.