The Holyrood Rebel Camp will see "non-violent direct action" in Edinburgh with various workshops and events taking place for those on the Holyrood site.
Extinction Rebellion Scotland have set up the camp, saying it will be their "biggest ever gathering".
They are calling on the Scottish Government to do more in response to what they call a "climate crisis and ecological breakdown" as the Climate Bill is to be discussed in Holyrood this week.
A recent report by the Committee on Climate Change recommended the UK should aim to be net-zero by 2050, with Scotland proposing a target for doing so five years earlier.
On June 4, five activists from the group with locks around their necks were attached to the Parliament building, with the means of freeing them sent to the leaders of the SNP, Conservatives, Labour, the Scottish Greens and the Liberal Democrats.