| Subject | English | Thesaurus |
| abbr., astronaut. | Application Development and Research Opportunity Programme | ADRO (RADARSAT) |
| abbr. | Career Opportunity Program | COP |
| ed., abbr. | Education Opportunity Program | EOP |
| ed., abbr. | Educational Opportunity Program | EOP |
| abbr., austral. | Equal Employment Opportunity Program | EEO Program |
| univer., abbr. | Global Educational Opportunities And Services | GEOS |
| NGO, abbr. | Monroe County Opportunity Program | MCOP |
| st.exch., abbr. | Opportunities In Options | OIO |
| univer., abbr. | Opportunity Scholars Program | OSP |
| USA | Rural/Underserved Opportunities Program | R/UOP |
| ocean., abbr. | Ship-of-Opportunity Program | SOP |
| univer., abbr. | Student Opportunities And Services | SOS |
| relig., abbr. | Summer Research Opportunity Program | SROP |
| USA | Technology Opportunities Program | TOP |
| interntl.trade., abbr. | Trade Opportunities Program | TOP |
| univer., abbr. | Tuition Opportunity Program For Students | TOPS |
| USA | Underserved Opportunities Program | UOP |
| ed., abbr. | Youth Opportunity Programme | YOP |
