Fredericksburg may refer to a location in the United States:
- Fredericksburg, California
- Fredericksburg, Indiana
- Fredericksburg, Iowa
- Fredericksburg, Ohio
- Fredericksburg, Pennsylvania (disambiguation), various places
- Fredericksburg, Texas
- Fredericksburg, Virginia
- Battle of Fredericksburg, a major battle of the American Civil War which took place there
- Second Battle of Fredericksburg, another battle of the American Civil War that took place there
It may refer to a location in Canada:
- Fredericksburg, Ontario, the defunct name for Delhi, Ontario, Canada