Petersburg, or Petersburgh, may refer to:
In Australia:
- Petersburg, former name of Peterborough, South Australia
In Russia:
- Saint Petersburg, frequently referred to simply as "Petersburg"
In the United States:
- Petersburg, Alaska
- Petersburg, California
- Petersburg, California, former name of Greasertown, California
- Petersburg, Delaware
- Petersburg, Georgia
- Petersburg, Illinois
- Petersburg, Indiana
- Petersburg, Delaware County, Iowa
- Petersburg, Muscatine County, Iowa
- Petersburg, Boone County, Kentucky
- Petersburg, Jefferson County, Kentucky
- Petersburg, Michigan
- Petersburg, Nebraska
- Petersburgh, New York
- Petersburg, Burke County, North Carolina
- Petersburg, Madison County, North Carolina
- Petersburg, Onslow County, North Carolina
- Petersburg, North Carolina, former name of Moravian Falls, North Carolina
- Petersburg, North Dakota
- Petersburg, Ohio
- Petersburg, Pennsylvania
- Petersburg, Tennessee
- Petersburg, Texas
- Petersburg, Virginia
- Petersburg, West Virginia
- Petersburg, Wisconsin
Petersburg may also refer to:
- Petersburg (novel), 1913 novel by Andrei Bely
- Siege of Petersburg, a battle of the American Civil War