North Bangkok University FC
Rasisalai United
Royal Thai Fleet FC
Kasem Bundit University FC
Rajpracha FC
Air and Coastal Defense Command FC
Samut Sakhon City
Surin Sugar Khong Chee Mool
Prime Bangkok FC
Lopburi City FC
Bankhai United
Pathumthani University
Saimit Kabin United
Royal Thai Navy FC
Dome FC
Chamchuri United FC
Royal Thai Army FC
Maejo United
Hua Hin Maraleina
Royal Thai Air Force FC
Pluakdaeng United
Roi Et PB United
Marines Eureka FC
Thonburi United FC
Khonkaen FC
AUU Inter Bangkok
Muang Loei United
Udon United
Chachoengsao Hi-Tek
Chiangrai City FC
Padriew City
Khelang United
Samut Prakan FC
Thap Luang United
Angthong FC
Chiangmai FC
Saraburi United FC
Ubon Kruanapat
Surin City FC 
BFB Pattaya City
Samut Songkhram City
Nonthaburi United
Phuket Andaman
Khonkaen Mordindang FC
Suranaree Black Cat
VRN Muangnont
Hua Hin City
Krabi FC
Toko Customs United
Assumption United
Yasothon FC
Muang Trang United
Surat Thani City
Kanchanaburi City
TPF Uttaradit
Phitsanulok Unity FC
Phatthalung FC
Phitsanulok FC 2015
Ranong United FC
Songkhla FC
PT Satun FC
Nakhon Sawan See Khwae City
Nara United
Chattrakan City
Kamphaengphet FC
Northern Nakhon Mae Sot United
Pattani
FC Yala
Yala City FC