Grotworm may refer to the following creatures:
- Grotworm (Song from the Depths), level 2, creatures only found in Queen Black Dragon's belly during the Song from the Depths quest.
- Young grotworm, level 40, found in the top level of Grotworm Lair.
- Grotworm, level 80, found in the middle level of Grotworm Lair.
- Mature grotworm, level 120, found in the bottom level of Grotworm Lair.
- Giant worm, level 105, summoned by the Queen Black Dragon in combat.