Sector 30 was a region of Federation-controlled space located near the Romulan Neutral Zone.
In 2364, five Federation outposts in this sector, including Science Station Delta-05, were destroyed by a then unknown enemy. (TNG: "The Neutral Zone") It was believed that the Borg were responsible for their destruction. (TNG: "Q Who")
In 2366, Admiral Haden placed this sector on alert during the Nelvana III incident. (TNG: "The Defector")
Later that year, trader Kivas Fajo sabotaged the water supply on the Federation planet Beta Agni II. He would be later tried in a Federation court for this act of vandalism. (TNG: "The Most Toys")
Locations:
- Unnamed system
- Beta Agni system
- Giles Belt
- Lya system
- Tarod system
- In an Okudagram from The Most Toys, a line read: "Sector 30-439".
According to the Star Trek: Star Charts, on page 66, this sector was located in the Beta Quadrant and could be called either the Tarod Sector, after the Tarod system, or Sector 030.