The Order of Nine Angles (often shortened to the O9A or ONA) is a neo-Nazi cult that originated in the United Kingdom, most likely by British neo-Nazi David Myatt and associates. O9A groups and individuals operate across the world, including in Canada, where a follower of the O9A murdered a Muslim man working at a Toronto Mosque in 2019.

The O9A is known for promoting extreme violence among its followers, including sexual violence and premeditated murders. Its followers have been known to influence and engage with a wide variety of religious movements including New Religious groups, Muslims extremists, neo-Buddhist groups, and even Catholic and Orthodox churches. O9A followers have also been influencial in subcultural communities including including mysticism, environmentalism, New Age communities, youth-oriented internet forums, and certain heavy metal music communities - including in Canada.

The O9A uses many symbols specific to their movement. The most common is the Septinary Sigal, effectively the logo of the Order of Nine Angles.

This group or movement relies partially on media attention for recruitment. We recommend proceeding with informed caution when reporting on this group/movement in a public manner.