The "No" campaign refers to the opposition to a proposed constitutional change in Australia that would create a constitutionally enshrined Indigenous advisory body to Parliament, known as the Indigenous Voice. The campaign is decentralized and involves groups and individuals from across the political spectrum, from those who say the advisory body would be too powerful to those who think it would not be powerful enough. The "No" camp is not required to put forward an alternative form of Indigenous representation, but only to convince voters not to support the current proposal. The following are some of the groups and individuals that have been associated with the "No" campaign:

• Advance Australia: A conservative lobby group that has positioned itself as a counterweight to left-leaning advocacy groups in recent elections, with campaigns fought mostly on social media. Advance Australia also operates Facebook discussion groups to amplify anti-Voice content. Indigenous conservative senator Jacinta Nampijinpa Price has supported Advance Australias campaign.
• Right-Wing Populists: Some populist political parties, including Pauline Hansons One Nation, which has two of Australias 76 Senate seats, have said they oppose the Voice because of concerns it would give additional powers to Indigenous leaders. Hanson has made unsubstantiated claims about the Voice including that it would lead to a breakaway Aboriginal state.
• Conservative "No" Campaign: One side of the "No" campaign comes from the right of politics, including prominent members of the Coalition. With the catchphrase, "If you dont know, vote no", this camp hopes to impel voters who are unsure about what it all means to just vote no instead of finding the information required. One of the drivers behind this "No" campaign is Fair Australia, an arm of the lobbying group Advance Australia. Advance counts former Prime Minister Tony Abbott as an advisory member and is backed by wealthy donors. These groups are harnessing social media to push their arguments, which mainly revolve around two themes: "dividing" the nation, and the lack of detail masking a hidden agenda. This side of the "No" camp has faced many accusations of spreading misinformation.

It is worth noting that some of the arguments made by the "No" campaign have been criticized as lies or misinformation.