Lancaster is the name of several places around the world:
- Lancaster, England
- Lancaster, Ontario, Canada
- Lancaster, California, United States
- Lancaster, Kansas, United States
- Lancaster, Kentucky, United States
- Lancaster, Massachusetts, United States
- Lancaster, Minnesota, United States
- Lancaster, Missouri, United States
- Lancaster, New Hampshire, United States
- Lancaster, New York, United States
- Lancaster, Ohio, United States
- Lancaster, Pennsylvania, United States
- Lancaster, South Carolina, United States
- Lancaster, Texas, United States
- Lancaster, Virginia, United States
- Lancaster, Wisconsin, United States
- Lancaster County, Nebraska
- Lancaster County, Pennsylvania, United States
- Lancaster County, South Carolina
- Lancaster County, Virginia
- Lancaster Township, Pennsylvania