 Pygmy kraken | 1 | 1/432 |
 Pyrefiend (Level 43) | 1 | 1/170.67 |
 Pyrelord (1) | 1 | 1/170.67 |
 Red dragon (1) | 1 | 1/102.4 |
| Reinforced chest | 1 | 4/75 |
 Repugnant spectre | 1 | 1/16, 3 rolls |
| Reward Cart | 1–3 | Varies |
| Reward Chest (The Gauntlet) (Corrupted) | 25–65 | 1/24, 3 rolls |
| Reward Chest (The Gauntlet) (Partial completion) | 1–3 | 1/27 |
| Reward Chest (The Gauntlet) (Regular) | 20–60 | 1/24, 2 rolls |
 Rick Turpentine (Normal) | 1 | 32/150 |
 Rock | 1 | 1/102.4 |
 Rock Crab (Active) | 1 | 1/512 |
| Rock Golem (monster) (High level) | 1 | 1/256 |
 Rock lobster (Active) | 1 | 1/512 |
| Rocks (The Tourist Trap) | 1 | 32/32,768 |
 Rockslug (Adult) | 1 | 1/85.33 |
| Rubium deposit | 1 | 32/32,768 |
| Rubium rocks | 1 | 32/32,768 |
 Rune dragon | 1 | 1/3,251.2 |
| Runite rocks | 1 | 32/32,768 |
| Rusty chest | 1 | 4/75 |
 Salarin the twisted | 1 | 1/512 |
 Sand Crab (Active) | 1 | 1/512 |
 Sarachnis | 20–30 | 4/100 |
| Sarachnis | 1 | 1/400 |
| Sarcophagus (Ancient Pyramid) | 1 | Rare |
 Scarab Mage (Level 66 (Contact!)) | 4 | 3/128 |
| Scarab Mage (Level 66 (Contact!)) | 1 | 1/33.78 |
 Screaming banshee | 1 | 1/256, 3 rolls |
 Screaming twisted banshee | 1 | 1/256, 3 rolls |
 Sea Snake Hatchling | 1 | 1/512 |
 Sea Snake Young | 1 | 1/512 |
 Shadow warrior | 1 | 1/64 |
 Shadow Wyrm (Idle) | 1 | 1/304, 3 rolls |
 Shellbane gryphon | 1 | 1/512, 2 rolls |
| Shop Counter (gems) | 1 | 1,000/3,000 |
| Silver rocks | 1 | 32/32,768 |
 Sir Carl | 1 | 1/256 |
 Sir Harry | 1 | 1/256 |
 Sir Jerro | 1 | 1/256 |
 Skeletal miner | 1 | 1/256 |
 Skeletal Wyvern (1) | 1 | 1/1,092.27 |
 Skeleton | 1 | 1/256 |
 Skeleton (1) | 1 | 1/415.14 |
 Skeleton | 1 | 1/256 |
 Skeleton (Melee) | 1 | 1/415.14 |
 Skeleton (Level 40) | 1 | 1/256 |