ClubLocationLeagueTierFounded
Phitsanulok—Thai League 3 - Northern Region—2005Pluakdaeng United—Thai League 3 - Eastern Region—2005Prime Bangkok—Thai League 3 - Bangkok Metropolitan Region—2006Roi-Et PB United—Thai League 3—2008Rongseemaechaithanachotiwat Phayao—Thai League 3 - Northern Region—2022Royal Thai Air Force—Thai League 3 - Bangkok Metropolitan Region—2019Royal Thai Army—Thai League 3 - Bangkok Metropolitan Region—2011STK Muangnont—Thai League 3 - Bangkok Metropolitan Region—2012Samut Prakan FC—Thai League 3 - Bangkok Metropolitan Region—2009Samut Sakhon City—Thai League 3 - Bangkok Metropolitan Region—2010Samutsongkhram—Thai League 3 - Western Region—2005Saraburi United—Thai League 3 - Western Region—2017Songkhla—Thai League 3 - Southern Region—2018Surin City—Thai League 3 - Northeastern Region—2009Surin Khong Chee Mool—Thai League 3 - Northeastern Region—2017Thap Luang United—Thai League 3 - Western Region—2021Thonburi United—Thai League 3 - Bangkok Metropolitan Region—2015Trang—Thai League 3 - Southern Region—2010Ubon Kruanapat—Thai League 3 - Northeastern Region—2009Udon United—Thai League 3 - Northeastern Region—2018Uttaradit—Thai League 3 - Northern Region—2009Watbot City—Thai League 3 - Northern Region—2018Wiang Sa Surat Thani City—Thai League 3 - Southern Region—2016Yasothon—Thai League 3 - Northeastern Region—2010Young Singh Hatyai United—Thai League 3 - Southern Region—2017