| ABA Oman International School | |
| Opened: | 1987 |
| Type: | Non-profit |
| District: | Muscat |
| Grades: | Pre K to Grade 12 |
| Head Of School: | Craig Williamson |
| Enrollment: | 950 |
| Campus Type: | Modern |
| Campus Size: | Large |
| Mascot: | Viper |
| Colors: | Blue, white, gold |
The ABA Oman International School,[1] earlier known as American British Academy is a private, non-profit, co-educational international school in Muscat, Oman established in September 1987. It offers a K-12 English-language curriculum to expatriate students.[2] ABA is an International Baccalaureate World Continuum School, which enrolls 950 students from pre-kindergarten to grade 12 from more than 75 countries. ABA is the first school in the region to offer the IB programme — PYP, MYP and the IB DP.[3]