Byron Township is one of twenty-four townships in Ogle County, Illinois, USA. As of the 2010 census, its population was 6,563 and it contained 2,594 housing units.
According to the 2010 census, the township has a total area of , of which (or 98.50%) is land and (or 1.50%) is water. It contains the north three-quarters of the city of Byron.
The township contains these two cemeteries: Byron City and Saint Mary's.