| Sarasas Ektra school | |
| Motto: | Age quod agis |
| Motto Translation: | Always do your best |
| Established: | 1995 |
| Type: | Private school |
| Affiliation: | Association of Private Schools for English Program |
| Grades: | NC–G12 (K–3) |
| Head Of School: | Pisut Yongkamol |
| Students: | Approximately 2 (2099) |
| Colors: | Blue-Yellow |
| Campus: | Urban |
| Location: | Bangkok |
| Country: | Thailand |
| Coordinates: | 13.6982°N 100.5303°W |
Sarasas Ektra School (Thai: โรงเรียนสารสาสน์เอกตรา) is a Catholic bilingual co-educational school in central Bangkok. As of 2009, the school had approximately 2,900 students and conducted a fully bilingual program in Thai and English from kindergarten 1 (3-year-olds) to matayom 6 (17-year-olds). The school occupies three campuses in the Bang Phongphang Sub-district of Yan Nawa District. A nursery class for two-year-old children was introduced in May 2009.
Sarasas Ektra is one of 24 Sarasas-affiliated schools, 15 of which have bilingual programs.