Topfreedom is a cultural and political movement seeking changes in laws to allow women to be topless in public places where men are permitted to be barechested, as a form of gender equality. Specifically, the movement seeks the repeal or overturning of laws which restrict a woman's right not to have her chest covered at all times in public.

In addition, topfreedom advocates seek allowing nursing mothers to openly breastfeed in public.

Many societies^[which?] consider women who expose their nipples and areolae as immodest and contrary to social norms. In many jurisdictions^[which?] a topless woman may be cited for public lewdness, indecent exposure, public indecency or disorderly conduct.^{[citation needed]} Independently from the legality of the practice, topless women may also face harassment. Topfreedom advocates seek to change community attitudes to breasts as sex objects or indecent.

Several countries in Europe have decriminalised non-sexual toplessness. Topless swimming and sunbathing on beaches has become acceptable in many parts of Europe, though the practice remains controversial in many places, and not common in most places. Many public swimming pools in Europe are owned by municipalities, which are treated as private organisations and allowed to set their dress codes.^{[citation needed]}

In many countries around the world, breastfeeding in public is not unusual. During 2006–2010 and earlier, a number of news reports in the United States cited incidents where women were refused service or harassed for breastfeeding in public. In response, a majority of U.S. states have passed laws explicitly permitting nursing in public. The United States federal government enacted a law in 1999 which specifically provides that "a woman may breastfeed her child at any location in a Federal building or on Federal property, if the woman and her child are otherwise authorized to be present at the location." However, these laws generally do not apply to rules imposed by private organizations or on private property, such as restaurants, airlines, or shopping malls.

In support of Icelandic student Adda Smaradottir's FreeTheNipple act in public cyberspace, young women uploaded their topless photos to Facebook and protested against its Community Standards of considering women's breasts as sexual materials. Those photos and related news articles were blocked initially, but Facebook considered those photos did not violate Community Standards.

Bathing and sunbathing in the nude (including topless) is legal on Danish beaches. Nudity and toplessness in other public outdoor places is generally also legal, unless it involves "offensive conduct" or is likely to cause public outrage. The public outrage law is rarely used in practice, but in 1972 audience members were convicted of being nude in the Royal Danish Theatre. In December 2007, a group of women and men calling themselves Topless Front swam topless in public swim baths to promote topless equality. In March 2008, after a campaign by the group, Copenhagen's Culture and Leisure Committee voted to allow topless bathing in its swimming pools. After the committee had voted, it was revealed that no laws had existed against topless bathing, effectively making the vote unnecessary. However, some public baths had (and have) restricted it themselves. Public breastfeeding is supported by the vast majority of both sexes in Denmark, is entirely legal and accepted in almost all places, except for a few private cafés and restaurants that have restricted it.

In Finland, toplessness is not illegal, yet topless women have been removed from beaches. Sandra Marins [fi] and Säde Vallarén [fi] criticized this and organized Finland's first event demanding topless equality, called Tissiflashmob (breast flash mob). On Finland's Independence day, 6 December 2019, both Marins and Vallarén showed their breasts on live TV and it sparked a lot of conversation. Tissiflashmob 2020 was bigger than the previous one, now organized at the same time in eight different cities. The city of Helsinki has decided to allow topless sunbathing on its beaches in 2023, regardless of gender.