(Information only where known)
1. Patiwat Khammai - Samut Prakan's regular custodian with almost 100 appearances for Samut Prakan and Pattaya United.
18. Supawat Yokakul
25. Uklit Teerajantranon
36. Anusit Termmee - June 2021 signing from Rayong FC.
85. Narakorn Khonraengdee
3. Kittipong Sansanit - May 2021 arrival from Muangthong United after a loan spell at Udon.
4. Suphanan Bureerat - Established regular after a season-long loan spell at Muangthong in 2019. Made 27 league appearances last season.
5. Srayut Sompim - July 2021 signing from Buriram. Has also had loan spells at PTT Rayong and Suphanburi.
26. Chaiyawat Buran - one of the big close season signings from Chiang Rai United, where he made getting on for 100 appearances.
27. Aris Zarifovic - Serbian centre-back now in his third season at the club.
32. Saksit Jitvijan - Made 21 first team appearances last season.
44. Thanakij Khanakai - U-21 international but yet to make his first team debut.
45. Supakorn Nutvijit
73. Anuyut Mudlem - April 2021 arrival from Pluakdaeng United.
77. Tharatsuang Charachit
6. Nopphon Ponkam - Experienced fringe player now in his third season at the club.
11. Jaroensak Wonggorn - Vice captain and team superstar. Not expected to stay longer than half a season.
14. Daisuke Sakai - Japanese attacking midfielder who arrived in May 2021. Has also played in Belgium.
21. Yuthapichai Lertlum - U-23 international who made 12 appearances and scored 1 goal last season.
23. Yuto Ono - Experienced Japanese midfielder now in his second season at the club.
28. Phoutthasay Khochalern - Laos international who joined the club in July 2021.
41. Chitipat Kaewyot
49. Jiraaut Wingwon - U-21 international who made 13 appearances last season.
54. Suwicha Chittabut
55. Aphirak Suankan
79. Apinut Sreeponwaree - Youth player who arrived from Bangkok FC in April 2021.
9. Chayawat Srinawong - Captain and great club servant with well over 100 appearances for Samut Prakan and Pattaya United. Made 19 appearances last season despite injuries.
10. Eliandro - Big close season signing from Chonburi.
47. Thammarat Tathip
50. Phirapat Khamkaeng
78. Phatsaphon Choedwichit - Joined club in June 2021 from Watbot City.