| Subject | English | Catalan |
| comp., MS | sub-account | subcompte (An account, and its information, that is included within another account) |
| comp., MS | sub-contact | contacte secundari (A secondary contact for an Account (that is, not the primary contact)) |
| comp., MS | sub-grid | subquadrícula (A grid added to a form by a customizer that provides users with access to a group of records, which are usually contextually related) |
| environ. | sub-national boundary The line demarcating a territory located within the limits of a State | límit subnacional/subestatal |
| comp., MS | sub-pixel positioning | posicionament de subpíxels (A font rendering technique that takes advantage of partial pixels to make text appear sharper on the screen) |
| comp., MS | sub-report | subinforme (A report that is displayed in a second window when a user clicks an item in a report) |
| math. | sub-series | subsèrie |
| comp., MS | sub-territory | subzona de vendes (A territory, and its information, that is included within another territory) |