| Triamudomsuksa Pattanakarn Ratchada School | |
| Streetaddress: | 170 Ratchadaphisek Road, Huay Kwang Bangkok |
| Country: | Thailand |
| Coordinates: | 13.773°N 100.5738°W |
| Schoolnumber: | 1010720084 |
| District: | Huai Kwang |
| Schoolboard: | Bangkok Education Service Area Office 2 |
| Authority: | Office of the Basic Education Commission |
| Nickname: | Triampatratchada, TUPR |
| Director: | Kannika Phathaichan |
| Campus Type: | Urban |
| Motto: | Philosophy, Academic excellence and morality |
| Teaching Staff: | 159 |
| Students: | ~ 3500 |
| Ratio: | 1:25 |
| Avg Class Size: | 40 |
| Gender: | Coeducational |
| Type: | Government |
| Grades: | 7-12 (mathayom 1–6) |
| Language: | Thai; English; Chinese; French; Japanese |
| School Colours: | Pink-blue |
| Established: | 11 August 1961 (As Pracharat Upatham), 10 February 2003 (As Triampatrachada) |
| Status: | Secondary school level |
| Song: | Triampatratchada's March |
Triamudomsuksa pattanakarn Ratchada School (TUPR) (th|โรงเรียนเตรียมอุดมศึกษาพัฒนาการ รัชดา pronounced as /th/) originally known as Pracharat Upatham School. And often nicknamed as Triampatratchada is a school located in Bangkok, Thailand. The school covers around 10 Rai (16,000 m²) and it educates around 3,500 students from Mathayom 1 - 6 (Grade 7 - 12). It is also next to Ratchadaphisek Road which makes it easy for students to go to this school