Union Block
- National Register of Historic Places listings in Bourbon County, Kansas
- National Register of Historic Places listings in Yamhill County, Oregon
- Union Block (Brigham City, Utah)
- Union Block (Buchanan, Michigan)
- Union Block (Lewiston, Maine)
- Union Block (Lima, Ohio)
- Union Block (Mayville, North Dakota)
- Union Block (Mount Pleasant, Iowa)
- Union Block (Nunda, New York)
- Union Block (Oskaloosa, Kansas)
- Union Block (Saline, Michigan)
- Union Block and Montandon Buildings
- Union blockade