 Cave kraken (Cave kraken) | 1 | 1/2,133.33 |
 Cave slime | 1 | 1/2,048 |
 Cerberus | 5 | 3/130 |
| Cerberus | 1 | 1/17,749.33 |
| Certer | 1 | 2/150 |
 Chaos druid | 1 | 1/8,192 |
 Chaos druid warrior | 1 | 1/8,192 |
 Chaos dwarf | 1 | 1/1,638.4 |
 Chaos Elemental | 1 | 1/6,553.6 |
 Chaos Fanatic | 1 | 1/1,771.24 |
 Chaos Golem (Golem) | 1 | 1/52 |
 Chasm Crawler (Standard) | 1 | 1/8,192, 3 rolls |
| Chest (Aldarin Villas) | 1 | 1/75 |
| Chest (Bryophyta's lair) (Free-to-play) | 5 | 4/118 |
| Chest (Bryophyta's lair) (Members) | 5 | 4/118 |
| Chest (Dorgesh-Kaan Rich) | 1 | 1/15 |
| Chest (Isle of Souls Dungeon) | 1–2 | 4/200 |
| Chest (moon key) | 50 | 10/107 |
| Chest (Obor's lair) | 5 | 5/118 |
| Chest (Rogues' Castle) (Hard Wilderness Diary) | 3 | 3/66 |
| Chest (Rogues' Castle) (Hard Wilderness Diary) | 6 | 2/66 |
| Chest (Rogues' Castle) (Medium Wilderness Diary) | 3 | 3/66 |
| Chest (Rogues' Castle) (Medium Wilderness Diary) | 5 | 2/66 |
 Chilled jelly | 1 | 1/2,048 |
 Choke devil | 1 | 1/1,024, 3 rolls |
| Clay rocks | 1 | 2/32,768 |
| Coal rocks | 1 | 2/32,768 |
 Cockathrice | 1 | 1/4,096, 3 rolls |
 Cockatrice | 1 | 1/4,096 |
 Colossal Hydra | 1 | 1/8,192, 3 rolls |
 Commander Zilyana | 1 | 1/2,500.92 |
| Copper rocks | 1 | 2/32,768 |
 Corporeal Beast | 1 | 1/2,730.67, 10 rolls |
| Crashed Star | 1 | 2/32,768 |
 Crawling Hand (Level 7) | 1 | 1/4,096 |
 Crazy archaeologist | 1 | 1/1,771.24 |
 Crushing hand | 1 | 1/4,096, 3 rolls |
 Cyclops | 1 | 1/2,730.67 |
 Cyclops (Level 56) | 1 | 1/3,200 |
 Cyclops (Green) | 1 | 1/3,200 |
| Cyclops (Warriors' Guild Basement) | 1 | 1/20,480 |
| Cyclops (Warriors' Guild Rooftop) | 1 | 1/3,200 |
| Daeyalt Essence (rock) | 1 | 2/32,768 |
 Dagannoth (Level 74 (1)) | 1 | 1/8,192 |
 Dagannoth (Level 88) | 1 | 1/8,192 |
 Dagannoth Prime | 1 | 1/728.18 |
 Dagannoth Rex | 1 | 1/728.18 |
 Dagannoth spawn | 1 | 1/8,192 |