 Iron Counterweight | Blacksmithing | 165 | Iron Counterweight | Plans: Iron Counterweight |
 Iron Buckle | Blacksmithing | 150 | Iron Buckle | 10 trainers |
 Iridescent Hammer | Blacksmithing | 140 | Iridescent Hammer | Plans: Iridescent Hammer |
 Invulnerable Mail | Blacksmithing | 300 | Invulnerable Mail | Pattern: Invulnerable Mail |
 Invisibility Potion | Alchemy | 235 | Invisibility Potion | Recipe: Invisibility Potion |
| Invincible Mail | Blacksmithing | 300 | — | not recorded |
| Insulating Gniodine | Alchemy | 200 | — | not recorded |
 Instant Toxin | Poisons | 120 | Instant Toxin | Recipe: Instant Toxin |
 Instant Poison VI | Poisons | 1 | Instant Poison VI | 24 trainers |
| Instant Poison V | Poisons | 1 | Instant Poison V | 24 trainers |
| Instant Poison IV | Poisons | 1 | Instant Poison IV | 24 trainers |
| Instant Poison III | Poisons | 1 | Instant Poison III | 24 trainers |
| Instant Poison II | Poisons | 1 | Instant Poison II | 24 trainers |
 Inlaid Thorium Hammer | Blacksmithing | 270 | Inlaid Thorium Hammer | Plans: Inlaid Thorium Hammer |
 Inlaid Mithril Cylinder Plans | Engineering | 205 | Plans: Inlaid Mithril Cylinder | 3 trainers |
 Inlaid Mithril Cylinder | Blacksmithing | 200 | Inlaid Mithril Cylinder | Plans: Inlaid Mithril Cylinder |
 Inferno Gloves | Tailoring | 300 | Inferno Gloves | Pattern: Inferno Gloves |
| Incandescent Mooncloth Vest | Tailoring | 300 | — | not recorded |
| Incandescent Mooncloth Robe | Tailoring | 300 | — | not recorded |
| Incandescent Mooncloth Leggings | Tailoring | 290 | — | not recorded |
| Incandescent Mooncloth Circlet | Tailoring | 300 | — | not recorded |
 Imperial Plate Shoulders | Blacksmithing | 265 | Imperial Plate Shoulders | Plans: Imperial Plate Shoulders |
 Imperial Plate Leggings | Blacksmithing | 300 | Imperial Plate Leggings | Plans: Imperial Plate Leggings |
 Imperial Plate Helm | Blacksmithing | 295 | Imperial Plate Helm | Plans: Imperial Plate Helm |
 Imperial Plate Chest | Blacksmithing | 300 | Imperial Plate Chest | Plans: Imperial Plate Chest |
 Imperial Plate Bracers | Blacksmithing | 270 | Imperial Plate Bracers | Plans: Imperial Plate Bracers |
 Imperial Plate Boots | Blacksmithing | 295 | Imperial Plate Boots | Plans: Imperial Plate Boots |
 Imperial Plate Belt | Blacksmithing | 265 | Imperial Plate Belt | Plans: Imperial Plate Belt |
| Idol of Ursin Power | Enchanting | 300 | — | not recorded |
| Idol of Sidereal Wrath | Enchanting | 300 | — | not recorded |
| Idol of Feline Ferocity | Enchanting | 300 | — | not recorded |
 Icy Scale Gauntlets | Leatherworking | 300 | Icy Scale Gauntlets | Pattern: Icy Scale Gauntlets |
 Icy Scale Breastplate | Leatherworking | 300 | Icy Scale Breastplate | Pattern: Icy Scale Breastplate |
 Icy Scale Bracers | Leatherworking | 300 | Icy Scale Bracers | Pattern: Icy Scale Bracers |
 Icy Cloak | Tailoring | 200 | Icy Cloak | Pattern: Icy Cloak |
| Ice Guard | — | ? | — | Ice Guard |
 Ice Deflector | Engineering | 155 | Ice Deflector | Schematic: Ice Deflector |
| Icebane Gauntlets | Blacksmithing | 300 | Icebane Gauntlets | Plans: Icebane Gauntlets |
 Icebane Breastplate | Blacksmithing | 300 | Icebane Breastplate | Plans: Icebane Breastplate |
| Icebane Bracers | Blacksmithing | 300 | Icebane Bracers | Plans: Icebane Bracers |
 Hyper-Radiant Flame Reflector | Engineering | 290 | Hyper-Radiant Flame Reflector | Schematic: Hyper-Radiant Flame Reflector |
| Hyperconductive Goldwrap | Engineering | 225 | — | not recorded |
 Hyperconductive Arcano-Filament | Tailoring | 200 | Hyperconductive Arcano-Filament | not recorded |
 Hyena Sample | — | ? | Acceptable Hyena Sample | Untested Hyena Sample |
 Huge Thorium Battleaxe | Blacksmithing | 280 | Huge Thorium Battleaxe | Plans: Huge Thorium Battleaxe |
 Hot Wolf Ribs | Cooking | 175 | Hot Wolf Ribs | Recipe: Hot Wolf Ribs |
 Hot Smoked Bass | Cooking | 240 | Hot Smoked Bass | Recipe: Hot Smoked Bass |
 Hot Lion Chops | Cooking | 125 | Hot Lion Chops | Recipe: Hot Lion Chops |
| Hoodoo Hex | — | ? | — | Hoodoo Hex |
| Honed Blue Dragonscale Shoulders | Leatherworking | 295 | — | not recorded |
