Fly may refer to:
- Flies, a summoning pet food
- Flight
- Fly-fishing rod, a Fishing rod used to catch trout and salmon
- Fly trap (NPC), an NPC found on Karamja
- Fly trap seed, a seed used in the Farming skill
- Flying Book, found at the Mage Training Arena
- Flying bugs, a monster encountered during the As A First Resort... quest
- Flying leech, monster encountered during the Song From the Depths quest
- Flying Goblin Hat, a cosmetic award previously obtained from the Treasure Hunter
- Flying Horse Inn, a pub found in East Ardougne
- Warped fly, a monster in the Lumbridge Catacombs