Blue could refer to the following:
- Blue, a Devaronianfemale
- Blue, a protocol droid
- The color blue
- The color blue
- Lady Blue, a pilot in the Rebellion
- Ana Blue, a smuggler
- Anchor Blue, a gladiator
- Deliah Blue, a mechanic
- Tendir Blue, a Separatist agent
- Evo the Blue, a Rodian
- Ekria, who went by the alias Blue
- Blue, a member of the Gungan Sling Brigade
- Blue Diver, Galactic Alliance carrier
- Blue Flame, Jagged Fel's clawcraft
- Blue Hawk, Lancer frigate
- Tinta Blue Seven, shuttle
The 501st Legion wore blue armor as the legion's primary color.