CS or Cs may refer to:
- CoinShare, a system to share monster drops
- Clue scroll, an item used in Treasure Trails
- Customer Support, a division of Jagex that interacts with players
- Chaotic staff, a reward obtained from Dungeoneering
- A Clockwork Syringe, a quest
Look for any other RuneScape related meanings of CS on the appropriate Slang dictionary page.