 Pyrefiend (Level 43) | 1 | 1/341.33 |
 Pyrelord (1) | 1 | 1/341.33 |
 Red dragon (1) | 1 | 1/204.8 |
| Reinforced chest | 1 | 3/75 |
 Repugnant spectre | 1 | 1/32, 3 rolls |
| Reward Cart | 1–3 | Varies |
| Reward Chest (The Gauntlet) (Corrupted) | 15–60 | 1/24, 3 rolls |
| Reward Chest (The Gauntlet) (Regular) | 10–50 | 1/24, 2 rolls |
 Rick Turpentine (Normal) | 1 | 16/150 |
 Rock | 1 | 1/204.8 |
 Rock Crab (Active) | 1 | 1/1,024 |
| Rock Golem (monster) (High level) | 1 | 1/512 |
 Rock lobster (Active) | 1 | 1/1,024 |
| Rocks (The Tourist Trap) | 1 | 16/32,768 |
 Rockslug (Adult) | 1 | 1/170.67 |
| Rubium deposit | 1 | 16/32,768 |
| Rubium rocks | 1 | 16/32,768 |
 Rune dragon | 1 | 1/6,502.4 |
| Runite rocks | 1 | 16/32,768 |
| Rusty chest | 1 | 3/75 |
 Salarin the twisted | 1 | 1/1,024 |
 Sand Crab (Active) | 1 | 1/1,024 |
 Sarachnis | 20–30 | 3/100 |
| Sarachnis | 1 | 1/800 |
| Sarcophagus (Ancient Pyramid) | 1 | Rare |
 Scarab Mage (Level 66 (Contact!)) | 1 | 1/67.56 |
 Screaming banshee | 1 | 1/512, 3 rolls |
 Screaming twisted banshee | 1 | 1/512, 3 rolls |
 Sea Snake Hatchling | 1 | 1/1,024 |
 Sea Snake Young | 1 | 1/1,024 |
 Shadow warrior | 1 | 1/128 |
 Shadow Wyrm (Idle) | 1 | 1/608, 3 rolls |
 Shellbane gryphon | 1 | 1/1,024, 2 rolls |
| Shop Counter (gems) | 1 | 600/3,000 |
| Silver rocks | 1 | 16/32,768 |
 Sir Carl | 1 | 1/512 |
 Sir Harry | 1 | 1/512 |
 Sir Jerro | 1 | 1/512 |
 Skeletal miner | 1 | 1/512 |
 Skeletal Wyvern (1) | 1 | 1/2,184.53 |
 Skeleton | 1 | 1/512 |
 Skeleton (1) | 1 | 1/830.27 |
 Skeleton | 1 | 1/512 |
 Skeleton (Melee) | 1 | 1/830.27 |
 Skeleton (Level 40) | 1 | 1/512 |
 Skeleton brute | 1 | 1/512 |
 Skeleton fremennik (Level 40) | 1 | 1/512 |
 Skeleton heavy | 1 | 1/512 |