SybillaClaus.com
Sybilla Claus is an anthropologist, journalist and author, and the driving force behind the Rebel Girls project. Over a career spanning more than thirty years she has written for the largest Dutch national newspapers and published six non-fiction books. Her work tells critical and uplifting stories about feminism, women's freedom and the pressures facing today's girls and young women — from social media and self-diagnosis to gender ideology and the oppression of women. She compiled the Dutch book 'Gender Rebels' (2024) and the international English edition 'Rebel Girls' (2026).
More sister projects
Girls Not Brides: a global partnership of 1,400+ civil society organisations in nearly 100 countries dedicated to ending child marriage.
Femmes for Freedom: Dutch organisation fighting for the freedom and rights of (bicultural) girls and women, against marital captivity and forced marriage.
Women's Declaration International (UK): campaign to Restore Safeguarding – End Sex Falsification, calling to repeal the Gender Recognition Act 2004.
Sex Matters: UK human-rights charity promoting clarity about sex in law, policy and language to protect everybody's rights.
LGB Alliance: UK charity advocating for lesbians, gay men and bisexual people, with community support, a helpline and campaigns on same-sex rights.
Women's Liberation Front (WoLF): US non-profit advancing women's and girls' sex-based rights through legal advocacy, policy work and education.
Women's Rights Network (WRN): UK grassroots groups campaigning for women's rights and safety in sport, single-sex spaces and public life.
HeCheated: an archive documenting male athletes in female sports categories and the medals, records and places female athletes lost as a result.
Collective Shout: Australian grassroots movement against the objectification of women and the sexualisation of girls in media, advertising and culture.
Keep Prisons Single Sex (KPSS): campaign for the sex-based rights of women in prison in England, Wales and Scotland (2020-2024).
Frauenheldinnen e.V.: German non-profit offering legal aid to women and campaigning for women's rights and children's safety.
Voorzij: Dutch foundation promoting critical, evidence-based thinking on equality, women's rights and youth gender care.
No Self ID Taiwan: advocacy group opposing gender self-identification in Taiwanese law to protect women's safety, privacy and rights.
Contra el Borrado de las Mujeres: Spanish feminist alliance opposing the replacement of biological sex with gender identity in law and statistics.
Athena Forum: European charity protecting sex-based rights in law, policy and civil society through advocacy, research and public engagement.
UN Special Rapporteur on violence against women and girls: independent UN human-rights expert, mandate since 1994, reporting on all forms of violence.
Spinifex Press: independent Australian feminist publisher (est. 1991) and the English-language publisher of Rebel Girls.
Diametric Verlag: German publisher of gender research, women's studies and women's health, and publisher of the German Rebel Girls edition.
Uitgeverij Het Haantje: independent Dutch publisher of Gender Rebels, the book that started the Rebel Girls project. A Rebel Girls sister project.