Gualun, designated P8S-403 by the Tau'ri was a planet in the Milky Way galaxy that was ruled over by the Goa'uld System Lord Olokun. It is ruled by Kimo and Lali.
The near-constant flooding and seemingly endless rains in the idyllic world have kept the planet's inhabitants in cities that are self-sufficient. Resource-wise, the planet has little to offer; there is no spectacular flora or fauna, nor abundant seams of naquadah or trinium. It is, however, a strategically important planet for Olokun, as Gualun has a partially underground base near the Stargate that is used as a training ground for his Cursor'va. The planet also has a charged materials transporter. (RPG: "Living Gods: Stargate System Lords")