The Delta Outposts were a series of Federation communications arrays and subspace transceivers located on the border of the Klingon Empire. There were at least nine of these outposts. (ST reference: Star Charts)

• Outpost Delta 1
• Outpost Delta 2
• Outpost Delta 3
• Outpost Delta 4
• Outpost Delta 5
• Outpost Delta 6
• Outpost Delta 7
• Outpost Delta 8
• Outpost Delta 9