"A Day Without a Woman," also deemed the Women's Strike, encourages participants to skip work or school and avoid purchasing anything in stores or online to show just how critical a role women play in society.
Above: Women march down Istiklal Avenue to mark International Women's Day in Istanbul on March 8, 2017.
Women rally in Madrid.
More than 50 countries around the globe have events scheduled.
Police officers arrest women taking part in a Women's Day Rally in Manhattan.
Protesters gathered in Midtown near the Trump Tower.
A woman strikes a pose in front of the "Fearless Girl" statue on March 8. The girl faces Manhattan's well-known bronze charging bull, as if to fearlessly stare it down.
An investment firm, State Street Global Advisors, erected the statue ahead of International Women's Day.
People stop to photograph the "Fearless Girl" statue. An inscription at the base reads, "Know the power of women in leadership. She makes a difference."
A protester holds a pro-abortion rights sign in front of the White House during a march and rally to support women's health programs.
Women protest against gender inequality and sexual harassment in the workplace in Seoul.
A woman stands in front of a rainbow flag in Tbilisi.
Women cover their mouths at a demonstration in front of the government house in Santiago.
A woman raises her fist at a march in Paris.
A women and a girl wear pink hats with cat ears, "pussy hats," at a march in Copenhagen. The hats became popular after thousands wore them at the Women's March in Washington the day after the inauguration of Donald Trump.
A woman wears a female pictogram on her face in Marseille.
Women clap and chant slogans during a one-hour strike in Buenos Aires.