Occupy Jackson will gather at Smith Park in downtown Jackson, while Occupy Mississippi will set up on grounds of the state Capitol, only a block away.
The two groups share members. There is no march planned in downtown.
It is being described as a peaceful gathering with members walking back and forth between the two sites.
C.J. "James" Farrar, a supporter of the movement, said the groups are out to educate the public about economic inequality and corporate greed.
Farrar said the message is anger over corporate wealth and frustration with the struggles of people who are barely getting by.