| Es Castell | |
| Translit Lang1 Type: | Spanish |
| Translit Lang1 Info: | Es Castell |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Menorca#Spain Balearic Islands#Spain |
| Pushpin Map Caption: | Location in Menorca |
| Coordinates: | 39.8803°N 4.2908°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous Community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Balearic Islands |
| Subdivision Type3: | Island |
| Subdivision Name3: | Menorca |
| Leader Party: | PP |
| Leader Title: | Mayor |
| Leader Name: | Joana Escandell Salom |
| Area Total Km2: | 11.6 |
| Elevation Footnotes: | (AMSL) |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST (GMT +2) |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 07720 |
| Area Code: | +34 (Spain) + 971 (Baleares) |
| Website: | Town Hall |
Es Castell (in Catalan; Valencian pronounced as /əs kəsˈteʎ/) is a small municipality in eastern Menorca in the Balearic Islands, Spain. The town was founded in 1771 by British Col. Patrick Mackellar and was originally called Georgetown in honour of King George III; however, it takes its current name from the large fort nearby, known to the British as St. Philip's Castle. Col. Patrick MacKellar (Argyllshire 1717-1778) was the chief engineer of Menorca and his house today is known as Son Granot. Es Castell celebrates its Foundation Day on 1 June with 18th-century themed festivities, in which the Municipality itself, St. Philip's Castle Foundation, Son Granot and other institutions participate.