| Ritthidet Phensawat | |
| Fullname: | Ritthidet Phensawat |
| Birth Date: | 1997 3, df=yes |
| Birth Place: | Udon Thani, Thailand |
| Height: | 1.77 m |
| Currentclub: | Chiangmai |
| Clubnumber: | 19 |
| Position: | Left-winger |
| Years1: | 2017–2021 |
| Clubs1: | Chonburi |
| Caps1: | 1 |
| Goals1: | 0 |
| Years2: | 2017 |
| Clubs2: | → Thai Honda (loan) |
| Caps2: | 6 |
| Goals2: | 0 |
| Years3: | 2019 |
| Clubs3: | → Phuket City (loan) |
| Caps3: | 12 |
| Goals3: | 3 |
| Years4: | 2020 |
| Clubs4: | → MOF Customs United (loan) |
| Years5: | 2020 |
| Clubs5: | → Ayutthaya United (loan) |
| Caps5: | 5 |
| Goals5: | 0 |
| Years6: | 2020 |
| Clubs6: | → Rayong F.C. (loan) |
| Caps6: | 8 |
| Goals6: | 0 |
| Years7: | 2021 |
| Clubs7: | → Udon Thani (loan) |
| Caps7: | 8 |
| Goals7: | 1 |
| Years8: | 2022 |
| Caps8: | 8 |
| Goals8: | 1 |
| Years9: | 2022–2023 |
| Clubs9: | Phrae United |
| Caps9: | 12 |
| Goals9: | 0 |
| Years10: | 2023 |
| Clubs10: | Kasetsart |
| Caps10: | 10 |
| Goals10: | 1 |
| Years11: | 2023–2024 |
| Clubs11: | Maejo United |
| Caps11: | 13 |
| Goals11: | 3 |
| Years12: | 2024– |
| Clubs12: | Chiangmai |
| Caps12: | 0 |
| Goals12: | 0 |
| Nationalyears1: | 2015 |
| Nationalteam1: | Thailand U20 |
| Nationalyears2: | 2019 |
| Nationalteam2: | Thailand U23 |
| Pcupdate: | 7 April 2024 |
Ritthidet Phensawat (th|ฤทธิเดช เพ็ญสวัสดิ์; born March 21, 1997) is a Thai professional footballer who plays as a left-winger for Thai League 3 club Chiangmai.