diff --git a/BetterBags.toc b/BetterBags.toc
index 500d861a..1e500cb7 100644
--- a/BetterBags.toc
+++ b/BetterBags.toc
@@ -37,6 +37,7 @@ debug\frames.lua
 
 theme\masque.lua
 
+data\categories.lua
 data\items.lua
 
 util\color.lua
diff --git a/data/categories.lua b/data/categories.lua
new file mode 100644
index 00000000..c9c7f361
--- /dev/null
+++ b/data/categories.lua
@@ -0,0 +1,31 @@
+local addonName = ... ---@type string
+
+---@class BetterBags: AceAddon
+local addon = LibStub('AceAddon-3.0'):GetAddon(addonName)
+
+---@class Categories: AceModule
+---@field private itemToCategory table<number, string>
+local categories = addon:NewModule('Categories')
+
+function categories:OnInitialize()
+  self.itemToCategory = {}
+end
+
+---@param id number The ItemID of the item to add to a custom category.
+---@param category string The name of the custom category to add the item to.
+function categories:AddItemToCategory(id, category)
+  self.itemToCategory[id] = category
+end
+
+---@param id number The ItemID of the item to lookup a custom category for.
+---@return string
+function categories:GetCustomCategory(id)
+  return self.itemToCategory[id]
+end
+
+---@param id number The ItemID of the item to remove from a custom category.
+function categories:RemoveItemFromCategory(id)
+  self.itemToCategory[id] = nil
+end
+
+categories:Enable()
\ No newline at end of file
diff --git a/frames/item.lua b/frames/item.lua
index fb6f6e66..c3e77263 100644
--- a/frames/item.lua
+++ b/frames/item.lua
@@ -21,6 +21,9 @@ local database = addon:GetModule('Database')
 ---@class Color: AceModule
 local color = addon:GetModule('Color')
 
+---@class Categories: AceModule
+local categories = addon:GetModule('Categories')
+
 ---@class Localization: AceModule
 local L = addon:GetModule('Localization')
 
@@ -213,6 +216,12 @@ function itemProto:SetFreeSlots(bagid, slotid, count, reagent)
 end
 
 function itemProto:GetCategory()
+  -- Return the custom category if it exists.
+  local customCategory = categories:GetCustomCategory(self:GetMixin().itemID)
+  if customCategory then
+    return customCategory
+  end
+
   if not self.kind then return L:G('Everything') end
   -- TODO(lobato): Handle cases such as new items here instead of in the layout engine.
   if self:GetMixin().containerInfo.quality == Enum.ItemQuality.Poor then