Lord Armstrong
Lord Armstrong may refer to:
- Iain Armstrong, Lord Armstrong, Senator of the College of Justice in Scotland
- Robert Armstrong, Baron Armstrong of Ilminster, British former civil servant
- William Armstrong, Baron Armstrong of Sanderstead, British civil servant and banker
- One of the hereditary Barons Armstrong:
- *William Armstrong, 1st Baron Armstrong
- * William Watson-Armstrong, 1st Baron Armstrong
- * William Watson-Armstrong, 2nd Baron Armstrong
- *William Watson-Armstrong, 3rd Baron Armstrong