- Sa Kaeo
- Sadao
- Sai Buri
- Sakon Nakhon
- Salak Aun
- Sam Phran
- Sam Roi Yot
- Samut Prakan
- Samut Sakhon
- Samut Songkhram
- San Kamphaeng
- San Pa Tong
- Sangkhla Buri
- Sangkhom
- Saraburi
- Sattahip
- Satuek
- Satun
- Sawang Daen Din
- Sawang Wirawong
- Sawankhalok
- Seka
- Si Bun Rueang
- Si Chiang Mai
- Si Racha
- Si Sa Ket
- Si Satchanalai
- Sing Buri
- Soeng Sang
- Son
- Songkhla
- Su-ngai Kolok
- Sukhothai Thani
- Sung Noen
- Suphan Buri
- Surat Thani
- Surin
- Suwannaphum
