Rampart may refer to:

• Rampart (fortification), a defensive wall or bank around a castle, fort or settlement

Rampart may also refer to:

• "O'er the Ramparts We Watched" is a key line from "The Star-Spangled Banner", the national anthem of the United States of America
• LAPD Rampart Division, a division of the Los Angeles Police Department
  • Rampart scandal, a blanket term for the widespread corruption of the Rampart Division
• Ramparts (magazine), a leftist American magazine that was published from 1962 through 1975
• Rampart Search and Rescue, Adams County, Colorado
• RampART Social Center, an anti-authoritarian social centre in Whitechapel, East London UK
• Apache Rampart module, a module from the Apache Software Foundation for Web Services security
• Rampart High School, a National School of Excellence in Colorado Springs, Colorado
• Ramparts (Lille Gate) Commonwealth War Graves Commission Cemetery in the Ypres Salient, Belgium
• RAMPART-A, a secret signals intelligence program led by the United States National Security Agency