The Mexican War Streets, originally known as the "Buena Vista Tract," is a historic district that is located in the Central Northside neighborhood of Pittsburgh, Pennsylvania, in the United States.

The district is densely filled with restored row houses, community gardens, and tree-lined streets and alleyways.

During the late nineteenth century, Allegheny, Pennsylvania (later annexed by Pittsburgh), became known for its stately homes that were occupied by some of the area's wealthy families.

It was developed from land owned by William Robinson Jr., an ex-mayor of the city of Allegheny, who subdivided the property into streets and lots in 1847.

It was expanded again in 2018, when the Allegheny County Court of Common Pleas overturned the decision of the Pittsburgh City Council to deny the district's expansion.