Are You Happy? may refer to:

• "Are You Happy?", a 2009 song by American band Days Difference
• Are You Happy? (album), a 2016 album by Japanese band Arashi

• Miller, Brandon
• Miller-Bravias Indices
• Miller-Brewer House
• Miller Bridge
• Miller Bridge (Winterset, Iowa)
• Miller Brook
• Miller Brook (Black River)
• Miller Brook (North Branch Mehoopany Creek)
• Miller Brothers Cotton Warehouse
• Miller, Bruce
• Miller Building (Liberty, Missouri)
• Miller, Butch
• Miller, Canfield, Paddock & Stone
• Miller-Cansler House
• Miller, Carl
• Miller case
• Miller-Casella thermometer
• Miller Center
• Miller, Chris
• Miller, Christopher
• Miller, Chuck
• Miller, Clarence
• Miller-Claytor House
• Miller Code
• Miller, Colin