| Official Name: | Duey |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.0932°N -66.8398°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Yauco |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 3.32 |
| Area Land Sq Mi: | 3.31 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 1108 |
| Population Density Sq Mi: | 335.8 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 1394 |
| Postal Code Type: | ZIP Code |
Duey is a barrio in the municipality of Yauco, Puerto Rico. According to the 2010 Census, it had a population of 1,108 inhabitants and a population density of 129.21 people per km².[2] [3] [4]
Duey is located at the coordinates 18°5′36″N 66°50′23″W. According to the United States Census Bureau, Duey has a total area of 8.58 km², of which 8.56 km² is land and 0.02 km² (0.18%) is water.
Duey 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 population of Duey barrio was 1,264.[6]