Union Block

Union Block may refer to:


 * Union Block (Mount Pleasant, Iowa)
 * Union Block (Fort Scott, Kansas), listed on the NRHP in Bourbon County, Kansas
 * Union Block (Oskaloosa, Kansas)
 * Union Block (Lewiston, Maine)
 * Union Block (Buchanan, Michigan)
 * Union Block (Saline, Michigan)
 * Union Block (Mayville, North Dakota)
 * Union Block (Nunda, New York)
 * Union Block (Lima, Ohio)
 * Union Block (Newberg, Oregon), listed on the NRHP in Yamhill County, Oregon
 * Union Block (Brigham City, Utah)