Antagonist (disambiguation)
- Agonist (disambiguation)
- Agonist-Antagonist
- Antagonism (disambiguation)
- Antagonist (album)
- Antagonist (band)
- Antagonist (muscle)
- Antagonist A.D.
- Antagonist Tour
- Childe Cycle
- Inverse agonist
- Neurotech
- O Antagonista
- Physiological antagonists
- Protagonist (disambiguation)
- Receptor antagonist
- The Antagonists (Gann novel)
- The Antagonists (Haggard novel)
- The Antagonists (TV series)
- The Opponent (disambiguation)
- Villain (disambiguation)