Dasher may refer to any of the following:

• Dasher (software), a computer accessibility tool
• Dasher (Santa Claus's reindeer), one of Santa Claus's reindeer as named in "The Night Before Christmas"
• Dasher, Georgia, a town in the United States
• Volkswagen Dasher or Passat, an automobile model
• HMS Dasher (1895), a Charger-class torpedo-boat destroyer launched in 1895 and sold in 1912
• HMS Dasher (D37), an Avenger-class escort carrier launched in 1941 and sunk in 1943
• HMS Dasher (P280), an Archer-class patrol boat launched in 1986 and currently in service
• Danville Dashers, a former ice hockey team from Danville, Illinois, in the Continental Hockey League
• Danville Dashers, an ice hockey team from Danville, Illinois, in the Federal Hockey League
• Dasher High School, a historic institution of secondary education in Valdosta, Georgia
• Frank Abbandando or The Dasher, a New York contract killer
• Dasher Troy, American baseball player
• Kevin Wheatley or Dasher, Australian recipient of the Victoria Cross
• Dasher, the plunger part of a butter churn