DD or Dd may refer to:
- Distractions and Diversions, a repeatable weekly activity
- Development Diaries, website content released by Jagex
- Drill Demon, a random event
- Drunk dragon, a type of drink made from 32 Cooking
- Dust devil, a Slayer monster
- Deathtouched dart, a weapon that allows the player to kill most enemies in one hit.
- Dragon dagger
- Dragon dart
- Dragon defender
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