66th Brigade
66th Brigade may refer to:
China
Ukraine
United Kingdom
- 66th Anti-Aircraft Brigade
- 66th Infantry Brigade (United Kingdom)
- 66th Brigade, Royal Field Artillery, British Army unit during World War I
- 66th (South Midland) Brigade, Royal Field Artillery, British Army unit after World War I
- 66th (Leeds Rifles, The West Yorkshire Regiment) Anti-Aircraft Brigade, Royal Artillery
United States
- 66th Military Intelligence Brigade (United States)
- 66th Theater Aviation Command, an aviation brigade