This stage reflects the growing enthusiasm for football in Thailand's southern provinces, where clubs from coastal and rural areas proudly represent their regions on a national level.
Krabi was relegated from Thai League 2 and will now compete in the Southern Region, bringing with it a wealth of experience from a higher division.
[3] MH Nakhon Si City was relegated to the Thailand Semi-pro League after failing to meet licensing standards.
The distances between football clubs in the 2024–25 Thai League 3 Southern Region are approximate and calculated based on the most convenient and shortest practical road routes.
These measurements prioritize routes that balance proximity and ease of travel, avoiding too indirect or inconvenient paths despite their shorter distance.