Dunning may refer to:

• Dunning, Chicago, Illinois, United States, a community area
• Dunning, Nebraska, United States, a village
• Dunning Creek, Pennsylvania
• Dunning, Perth and Kinross, Scotland, a small village
  • Dunning railway station

• Dunning (surname), a surname
• Baron Dunning, a title in the peerage of the United Kingdom
• Dunning baronets, a title in the Baronetage of the United Kingdom
• Dunning (process), the process of methodically communicating with customers to ensure the collection of accounts receivable

• Dunning School, a historiographical school of thought regarding the Reconstruction period of American history
• Dunning House, Wawayanda, New York, United States
• Dunning–Kruger effect