Barina is a barrio in the municipality of Yauco, Puerto Rico.

The Yauco River crosses it from north to south, forming a flat valley that is used for agriculture.

The rest of the barrio is hilly and forms part of the Southern Karst region of Puerto Rico.

[6] Barina was in Spain's gazetteers[7] 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 Barina barrio was 1,432.