The white ribbon is an awareness ribbon sometimes used by political movements to signify or spread their beliefs. It is usually worn on garments or represented in information sources such as posters, leaflets, etc.

The White Ribbon has been the badge of the Woman's Christian Temperance Union founded by Frances Willard since its founding in 1873. The WCTU claims to be the oldest continuing non-sectarian women's organization worldwide. The white ribbon bow was selected to symbolize purity. The WCTU traditionally uses the bow rather than the more modern "remembrance" loop.

One of the most notable usages of the white ribbon in recent times is as the symbol of anti-violence against women, safe motherhood, and other related causes.

It also has a long tradition in state fairs and similar farming and horticultural competitions in the United States and Canada as a third-place ribbon.

After the École Polytechnique massacre on December 6, 1989, where 14 women were killed by an anti-feminist, a movement formed in Canada involving men wearing the white ribbon to signify opposition to violence against women.

The White Ribbon Campaign (WRC) appeared in 1991 in relation to this movement and became one of the largest men's anti-violence programs in the world. Started by activists such as Michael Kaufman and Toronto politicians like the late New Democratic Party leader Jack Layton, it has now spread to over 57 countries around the world. It is now an international effort of men and boys working to end violence against women. Its basic principle is the importance of men and boys speaking out against all forms of violence against women. For that purpose, members of the WRC offer a variety of presentations and workshops on violence. In Canada, the campaign is run from November 25 (the International Day for the Eradication of Violence Against Women) until December 6, Canada's National Day of Remembrance and Action on Violence Against Women. Other countries support 16 Days of Activism from November 25 until December 10, but campaigns can occur at any time of the year.

In 2014, A Voice for Men launched whiteribbon.org as a counter to the White Ribbon campaign. Accused of "hijacking" White Ribbon, the site was harshly criticized by Todd Minerson, executive director of The White Ribbon Campaign, who described it as "a copycat campaign articulating their archaic views and denials about the realities of gender-based violence". According to the site, its purpose is to present the view that domestic violence is "not a gendered problem". According to Cosmopolitan magazine, the site is used to display "anti-feminist propaganda".

In the beginning of 2003, a custom, largely influenced by the Échec à la guerre collective, emerged in Quebec of wearing the white ribbon to show a belief in the need for peace (mostly in opposition to the then-impending war in Iraq). The roots of the choice of the white ribbon are probably the traditional association of white with peace and the White Ribbon Campaign.