The Republican Block is a historic commercial building at 1365 Main Street in downtown Springfield, Massachusetts.

Built in 1858, it heralded the northward expansion of the downtown north of Court Square, and was the first permanent home of the Springfield Republican, one of the state's oldest newspapers.

[1] The Republican Block is located in downtown Springfield, on the east side of Main Street just north of Court Square, one of the city's oldest public spaces.

The Republican occupied the premises until 1867, and is the only surviving reminder of the period of ownership by its founder, Samuel Bowles.

Brigham greatly expanded the premises to the rear, and operated a clothing factory and shop in the building, which remained in business until 1969.