Siam FC

Thai League 2:
Air Force United | Army United | Ayutthaya United | BG Pathum United | JL Chiangmai United | Kasetsart | Khonkaen | Lanpang | MOF Customs United | Navy | Nongbua Pitchaya | Police Tero | Rayong | Samut Sakhon | Sisaket | Thai Honda | Ubon United | Udon Thani

Thai League 3:
Upper Region:Angthong / Ayutthaya / Bangkok / Chachoengsao / Chiangrai City / Kamphaengphet / Khonkaen United / Lamphun Warrior / Marines Eureka / Muangkan United / Phrae United / Sakaeo / Simork / Ubon Ratchathani
Lower Region:Banbueng / BTU United / Chamchuri United / KBU / Krabi / Nakhon Pathom United / Nakhon Si United / Nara United / North Bangkok University / Raj Pracha / Ranong United / Royal Thai Army / Surat Thani / Trang

Thai League 4:
Northern Region:Chiangrai United B / JL Chiangmai United B / Maejo United / Nakhon Mae Sot United / Nan / Phitsanulok FC 2015 / Singburi Bangrajun / Sukhothai B / Uttaradit / Wat Bot City
North Eastern Region:Buriram United B / Huai Thalaeng United / Kalasin / Khonkaen Mordindang / Mahasarakham / Mashare Chaiyaphum / Muang Loei United / Nongbua Pitchaya B / Sakon Nakhon / Sisaket United / Surin City / Surin Sugar Khong Chee Mool / Yasothon
Bangkok Metropolitan Region:Air Force United B / Air Force Robinson / Bangkok United B / Bankhunmae / Grakcu Sai-Mai United / Muangthong United B / Police Tero B / PTU Pathumthani / Rangsit United / RSU / Samut Prakan / Siam / Thonburi University
Eastern Region:Bankhai United / Chanthaburi / Kohkwang / Pattaya Discovery United / Phanthong / Pluak Daeng United / Royal Thai Fleet / Saimit Kabin United
Western Region:Assumption United / Chainat Hornbill B / Chainat United / Hua Hin City / IPE Samut Sakhon United / Look Esan / Ratchaburi Mitr Phol B / Samut Songkhram / Saraburi United
Southern Region:Cadenza Satun United / Hat Yai City / Jalor City / Muangkhon WU / Pattani / Phatthalung / Surat Thani City

Thailand Amateur League:
Upper Northern Region:Chiangmai City / Chiangmai Dream / Chiangrai Lan Na / CMRU / Mit Ari Chiangrai / North Vachiralai Chiangmai United / PRC Soccer Club / Pualand / Thung Hong United
Lower Northern Region:Lom Sak United / Maesot City / Muangkrung / Naresuan / Northern Tak United / Paknampho NSRU / Phetchabun United / Phetpittayakom / Phitsanulok City / PL-Tech Phitsanulok / PPS Petchabun City / Sakultala / See Kwae / Thaworn Farm / Uttaradit Rajabhat University / Uttaradit Unity
Upper North Eastern Region:Chaiyaphum United / CAS / Chum Phae / Kranuan / Jumpasri United / Mahasarakham City / Muang Loei / Nadoon / Nam Phong United / Nongnakham / PCTC / Payak / Pitchayabundit College / Roi Et CF / Roi Et FC 2018 / Takhon City / Udon-Banjun United
Lower North Eastern Region:Buriram Forest / Freeland Unity / HTT Weset United / Kadad City / Kantharalak / Kantharalak United / Kruanapat Ubon / Nakhon Ratchasima Rajabhat University / NBN Kanthararom United / NMC / Sisaket Wittayalai / Som Pho / Suranaree Army 2 / Surindra / Surin Power / Surin Sugar United / Suwannaphum United / Taud United / Ubon Kids City / UD Nonghan / X-star Khueannai United
Bangkok Region:APD United / Archa Knight / ATTS / Bangkok City / Bangkhuntien / Bangna United / Bannokkamin Foundation / B&B Rama II / BCC / Didosport United / Don Mueang Police Station / Hippo / KMUTNB / Lumpini / NKRAFA / Phimai United / Phoenix / PNS Langjan / Poilce Ladkrabang / RCC / RMUTR / Samut Prakan Football Association / Sing Ubon / Playmaker United / Thai Honda B
Metropolitan Regions:AICTA / Air Force Welfare Department / Bansomdejchaopraya Rajabhat University / Baan Ton Mai / Legends / Mahidol University Sport Science / Nongkhae / Petchaiyapruek / Samut Prakan United / Sing Nonthaburi / Sky-U-car / Sriwittayapaknam / ThonBuri Inter
Upper Eastern Region:Banarngwean Community School / Bangkapi / Bannandkradon / Kanjanapat / Navanakhon / Padriew United / Pathum Thani United / Prachinburi City / Prachinburi United / Plutalungwittaya / Siriroj / SWU United / Tan Diao / Wangpailom SC
Lower Eastern Region: ACDC / ACS / ABAC / Burapha Universtiy / Cilie / Hallelujah / Huayyai Classic / Khaobaisri / Pak Chong City / Pattana / Pattaya City Sport Football Club / Real Old Man / Salaeng / S.M.P. Pluakdaeng / Traf Maptaphut
Upper Western Region:Ayodhya City / Dontan PCCM / Krungsri Warrior / Kwanmuangwisetchaichan United / Nongkhae Police / Phathana Nikhom City / Yingcharoen
Lower Western Region:Ayutthaya Banprak / BTU / KU Kamphaengsaen / Midfield Soccer Hua Hin / Silpakorn University / Sing Rakhangthong Muangkan / Thamuang / Thawiwatthana / Thonburi City / Tungkok / Western
Upper Southern Region:Andaman Bluemarin Phuket / Khunthalay / Khunthalay United / Nakhon Si City / Samui City / Srivichai
Lower Southern Region:Kolok United / Pondok Salatan Satun / Siritham / Songkhla / Songkhla Aslan TSU / Sungaipadee

Former clubs:
3M | Amnat United | Ayutthaya Warrior | BAAC | Bangkok Bank | Bangplub Don Army | Bangsai | BBCU | BRU Kumuang County | Changphueak Chiang Mai | Chumphon | CPB | Distar Bangkok | Dome | GHB | Hat Yai | Internazionale Pattaya | JW Police | Kopoon Warrior | Korat | Krungkao Sports Association | Krung Thai Bank | Krung Thonburi | Loei City | Lopburi | Maptaphut | Muangchang United | Muangkan Warrior | Muangkhon United | Mukdahan Chaiyuenyong | Nakhon Nayok | Nakhon Phanom | Nakhon Sawan | Nakhon Sawan United | Nakhon Si Heritage | Narathiwat | Nongbua City | Nonghan | Nong Khai | Nongpho | Nonthaburi | Oon United | Pad Siam | Pakchong United | Pattaya | Phangnga | Phayao | Phetchabun | Phetburi | Phichit | Phitsanulok Songkwae | Phuket | Pibulsongkram Rajabhat University FC | Police United | Prachinburi | Prachinburi United | Prathuangthip Wittaya | Rajvithi | Ramkhamhaeng University | Ratchaburi Mitraphol RBAC | R-ma Soccer | Romklao United | Roob United | Sakon Nakhon | Sakon Nakhon City | Saraburi | Saraburi TLC | Saraburi TRU | Singnuea Chiang Mai | Songkhla | Songkhla United | Sriracha City | Suankularb Pathum-Aiin United | TA Benchamarachuthit | Tak | Tak City | TG Rayong | Thai Framers Bank | Thai Summit Samutprakarn | Thammanusorn | TMB | Tokio BlueArmy | TOT | Traill International school | TTM | Tumronthai | Tuynuy Academy | Ubon United | Uthaithani Forest | U-Thong | Wat Suthiwararam Alumni | Yala United

Related:
Provincial League | Thai FA Cup | Thai League Cup | Thailand Champions Cup