Cate Blanchette said, "We demand that our workplaces are diverse and equitable so they can best reflect the world in which we actually live, a world that allows all of us - in front and behind the camera - all of us to thrive shoulder to shoulder with our male colleagues".
The star-studded group will stop halfway facing the Palais des Festivals, "standing motionless, silent and together, to symbolize the extent to which the top of the. professional ladder still remains unattainable for them", organizers said in a statement. "Let's climb", it concluded.
According to The Hollywood Reporter, Blanchett - jury head of the 2018 festival - was joined by 81 female actors and executives on the steps of the red carpet during the Cannes screening of "Girls Of The Sun (Les Filles Du Soleil)".
Women have been stopped from entering premieres in the past for not wearing high heels. She added that as a producer, she was already seeing change in the appetite for projects by and about women.
"An honour to share the carpet with @Ava (DuVernay) and all the other women who are pushing for more opportunities for women", she said in a tweet after the march.
Salma has been a staunch advocate for the #Metoo and Time's up movement after speaking out about her experiences with disgraced film mogul Harvey Weinstein past year, alleging that he had put pressure on her to have sex with him.
In response, the festival set up an anti-harassment hotline this year.
Cheryl has shared a photo from her sun-drenched balcony in Cannes.
Blanchett has criticised Cannes for once again failing to invite more female directors.
Both Stewart and DuVernay are members of the Cannes Competition jury this year.
The 51-year-old Mexican actress looked sensational for the event in a glittering light blue gown with a shimmering silver belt accentuating her stunning hourglass figure.
On the organization's website it calls out disgraced mogul Harvey Weinstein and offers statements that echo the Time's Up and #MeToo movements.
Chastain caused a stir on Thursday when she revealed that she planned to make Hollywood's first big budget all-female blockbuster with a cast including Penelope Cruz and Lupita Nyong'o.
However, only 7 percent of all Hollywood blockbusters were directed by women in 2016. She described the selection of her film for the competition as "political".