Antonio Ruiz
- Full Name: Antonio Ruiz
- Born: Cuba, Earth (ENT Novel: Tower of Babel, Patterns of Interference)
- Species: Human
- Gender: Male
- Late 2163: Mining engineer, Federation (ENT Novel: Tower of Babel)
- 2164: Independent agent on Sauria, aiding local resistance (ENT Novel: Tower of Babel, Patterns of Interference)
- Death: March 7, 2166, Sauria
- Killed by Maltuvian agents during strike against launch facility (ENT Novel: Patterns of Interference)