A branch in Lynwood, California, surprised its customers by flipping the sign to resemble a 'W' and mark the worldwide celebration of women.
The fast food giant also inverted its “M” logo on all its social media platforms and provided staff at 100 of its US stores with special “packaging, crew shirts and hats, and bag staffers” to celebrate the day.
Wendy Lewis, McDonald's global chief diversity officer, said: "In celebration of women everywhere, and for the first time in our brand history, we flipped our iconic arches for International Women's Day in honour of the extraordinary accomplishments of women everywhere and especially in our restaurants."
McDonald's was hailed for the move by dozens of people who described it as "awesome" and thanked the fast food chain for raising awareness.
One person wrote: "It's amazing to see a worldwide renowned brand like McDonald's flipping the iconic "M" to celebrate women, not only in stores but on their digital channels to."
Lori Leal tweeted: "I saw this and I think it's so cool! Thanks McDonald's."
Rachel M Taylor West said: "WOW! This is so awesome! Thank you McDonald's."
Lisa Kimmel described the stunt as "Simply brilliant."
While another person wrote: “So McDonald’s inverted their logo today in celebration of International Women’s Day. They win the internet today.”
So Mcdonald’s inverted their logo today in celebration of International Women’s Day. They win the internet today. pic.twitter.com/gPGwWFjQDQ— Lord (@lordnicolas_) March 8, 2018
But some critics questioned what the fast food giant was doing to promote equality for the rest of the year.
McDonalds: In celebration of women we are flipping the arches upside down.— bogwolf (@truebe) March 7, 2018
Or you could give your employees better benefits.
McD: Look it's a W!
Maybe a living wage? Better family leave? A career path forward in the face of automation?
McD: The W stands for women.
Nate Lerner wrote: “Hey @McDonalds, maybe instead of a cheap PR stunt where you make the M a W to “support” women, you do something real — like paying your workers a living wage.”