One Voice is an independent animal and environmental protection association founded in 1995. Active in France and internationally, it advocates a non-violent but radical approach, addressing the causes of harm and promoting respect for all sentient beings and the planet. Its work connects animal welfare with the health of ecosystems and human society.

The association campaigns against the use of animals in entertainment, animal experimentation and the fashion industry, and works to protect wild and companion animals and their natural habitats. Through investigations, public campaigns, legal initiatives, press statements and awareness activities, One Voice seeks practical change and a more respectful relationship with the living world. Its website shares news, campaign updates, investigations, events and magazine content.

People can support the organisation by donating, becoming members or volunteers, sponsoring an animal, signing petitions and helping raise awareness. One Voice says it is funded by donations, which help it maintain its independence and carry out its work.