Dachau may refer to:

• Dachau, Bavaria, a town in Germany
• Dachau Bahnhof, main train station of Dachau
• Dachau (district), a rural district in Bavaria
• Dachau art colony, an early 20th century art colony in Bavaria
• Dachau concentration camp, a World War II Nazi forced-labor camp
• Dachau trials, trials for war crimes held in the former concentration camp
• Dachau (US Army report), a 1945 report on the concentration camp