The following is a list of Gaia inhabitants.
Named
Unnamed
Humans
These Human colonists existed in an alternate timeline on the planet Gaia created by the starship Defiant's crash landing on Gaia. Their existence was erased when the Defiant avoided the crash and that timeline was averted. (DS9: "Children of Time")
Klingon
This Klingon existed in an alternate timeline on the planet Gaia. With Brota and Parell, he followed the Klingon traditions and the path of the Sons of Mogh. He was a descendant of Worf. Together with Brota and Parell, he followed Worf and helped the Human descendants in planting their crop in 2374. (DS9: "Children of Time")
Trill
This female Trill was a descendant of Jadzia Dax and living on Gaia. However, she was only partially Trll. (DS9: "Children of Time")