| Sant Joan d'Alacant | |
| Native Name: | San Juan de Alicante |
| Settlement Type: | Town |
| Mapsize: | 150px |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location of Sant Joan in Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous Community |
| Subdivision Type2: | Province |
| Subdivision Type3: | Comarca |
| Subdivision Name2: | Province of Alicante |
| Subdivision Name3: | Alacantí |
| Government Footnotes: | [1] |
| Leader Party: | Independent |
| Leader Title: | Mayor |
| Leader Name: | Santiago Román Gomez |
| Area Footnotes: | [2] |
| Area Total Km2: | 9.64 |
| Elevation Footnotes: | (AMSL) |
| Elevation M: | 40 |
| Population As Of: | 2023 |
| Population Footnotes: | [3] |
| Population Total: | 25,275 |
| Population Density Km2: | auto |
| Population Demonym: | santjoaner, -era (va) sanjuanero/a (es) |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 03550 |
| Area Code: | +34 (ES) + 96 (A) |
| Blank Name Sec1: | Administrative Divisions |
| Blank Info Sec1: | 1 |
| Blank1 Name Sec1: | Neighborhoods |
| Blank1 Info Sec1: | 2 |
Sant Joan d'Alacant (pronounced as /ˈsaɲ dʒuˈan dalaˈkant/) or San Juan de Alicante (in Spanish) is a municipality belonging to Alicante metropolitan area, in the southeast of Valencian Community, Spain. It is the geographic center of the Old Garden of Alicante. Its limits are with the settled areas of Alicante (7 km), Mutxamel (1 km) and El Campello (3 km). It is within the Alicante metropolitan area and shares the same fire department and metro services. Its population growth is due to its function as a bedroom community, as well as in recent years, its isolation from tourist areas, its cultural and academic activities, and because has part of the campus of the University Miguel Hernández of Elx/Elche. It comprises two zones: the town of Sant Joan and Benimagrell, which is now joined through its urban expansion.
As of the register of 2023, the population is 25,275.