| Official Name: | Sardinera |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.3461°N -65.6429°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Fajardo |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 1.18 |
| Area Land Sq Mi: | 0.95 |
| Area Water Sq Mi: | 0.23 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 1190 |
| Population Density Sq Mi: | 1252.6 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 128 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 00738 |
Sardinera is a barrio in the municipality of Fajardo, Puerto Rico. Its population in 2010 was 1,190.[2] [3] [4]
Sardinera was in Spain's gazetteers[5] until Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became an unincorporated territory of the United States. In 1899, the United States Department of War conducted a census of Puerto Rico finding that the combined population of Naranjo and Sardinera barrios was 999.[6]
A shipment of cocaine with an estimated value of over US$6 million was confiscated in early 2021 at the marina in Sardinera.[7]
During the COVID-19 Pandemic, residents of Sardinera were able to participate in Spanish; Castilian: auto chinchorreo (curbside pickup) thus were able to pick up free meals from local food establishments. This initiative was launched by Mayor José Aníbal “Joey” Meléndez Méndez to tackle hunger.[8]