Cemetery Ridge is a geographic feature in Gettysburg National Military Park, south of the town of Gettysburg, Pennsylvania, that figured prominently in the Battle of Gettysburg, July 1 to July 3, 1863. It formed a primary defensive position for the Union Army during the battle, roughly the center of what is popularly known as the "fish-hook" line. The Confederate States Army launched attacks on the Union positions on the second and third days of the battle, but were driven back both times.

The Gettysburg Battlefield is the area of the July 1–3, 1863, military engagements of the Battle of Gettysburg within and around the borough of Gettysburg, Pennsylvania. Locations of military engagements extend from the 4-acre (1.6 ha) site of the first shot at Knoxlyn Ridge on the west of the borough, to East Cavalry Field on the east. A military engagement prior to the battle was conducted at the Gettysburg Railroad trestle over Rock Creek, which was burned on June 27.