diff --git a/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitBlockCategoryRegistry.java b/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitBlockCategoryRegistry.java
new file mode 100644
index 000000000..cecec0691
--- /dev/null
+++ b/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitBlockCategoryRegistry.java
@@ -0,0 +1,52 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.bukkit;
+
+import com.sk89q.worldedit.registry.Category;
+import com.sk89q.worldedit.world.block.BlockType;
+import com.sk89q.worldedit.world.registry.BlockCategoryRegistry;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.Tag;
+
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class BukkitBlockCategoryRegistry implements BlockCategoryRegistry {
+
+    private Set<BlockType> getFromBukkitTag(Tag<Material> tag) {
+        return tag.getValues().stream().map(BukkitAdapter::asBlockType).collect(Collectors.toSet());
+    }
+
+    @Override
+    public Set<BlockType> getCategorisedByName(String category) {
+        String[] split = category.split(":");
+        String namespace = split.length > 1 ? split[0] : "minecraft";
+        String key =  split.length > 1 ? split[1] : category;
+        Tag<Material> tag = Bukkit.getTag(Tag.REGISTRY_BLOCKS, new NamespacedKey(namespace, key), Material.class);
+        return getFromBukkitTag(tag);
+    }
+
+    @Override
+    public Set<BlockType> getAll(Category<BlockType> category) {
+        return getCategorisedByName(category.getId());
+    }
+}
diff --git a/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitItemCategoryRegistry.java b/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitItemCategoryRegistry.java
new file mode 100644
index 000000000..c75c56eb2
--- /dev/null
+++ b/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitItemCategoryRegistry.java
@@ -0,0 +1,52 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.bukkit;
+
+import com.sk89q.worldedit.registry.Category;
+import com.sk89q.worldedit.world.item.ItemType;
+import com.sk89q.worldedit.world.registry.ItemCategoryRegistry;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.Tag;
+
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class BukkitItemCategoryRegistry implements ItemCategoryRegistry {
+
+    private Set<ItemType> getFromBukkitTag(Tag<Material> tag) {
+        return tag.getValues().stream().map(BukkitAdapter::asItemType).collect(Collectors.toSet());
+    }
+
+    @Override
+    public Set<ItemType> getCategorisedByName(String category) {
+        String[] split = category.split(":");
+        String namespace = split.length > 1 ? split[0] : "minecraft";
+        String key =  split.length > 1 ? split[1] : category;
+        Tag<Material> tag = Bukkit.getTag(Tag.REGISTRY_ITEMS, new NamespacedKey(namespace, key), Material.class);
+        return getFromBukkitTag(tag);
+    }
+
+    @Override
+    public Set<ItemType> getAll(Category<ItemType> category) {
+        return getCategorisedByName(category.getId());
+    }
+}
diff --git a/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitRegistries.java b/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitRegistries.java
index 6ed0999c7..5c93a8422 100644
--- a/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitRegistries.java
+++ b/worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitRegistries.java
@@ -20,8 +20,10 @@
 package com.sk89q.worldedit.bukkit;
 
 import com.sk89q.worldedit.world.registry.BiomeRegistry;
+import com.sk89q.worldedit.world.registry.BlockCategoryRegistry;
 import com.sk89q.worldedit.world.registry.BlockRegistry;
 import com.sk89q.worldedit.world.registry.BundledRegistries;
+import com.sk89q.worldedit.world.registry.ItemCategoryRegistry;
 
 /**
  * World data for the Bukkit platform.
@@ -31,6 +33,8 @@ class BukkitRegistries extends BundledRegistries {
     private static final BukkitRegistries INSTANCE = new BukkitRegistries();
     private final BlockRegistry blockRegistry = new BukkitBlockRegistry();
     private final BiomeRegistry biomeRegistry = new BukkitBiomeRegistry();
+    private final BlockCategoryRegistry blockCategoryRegistry = new BukkitBlockCategoryRegistry();
+    private final ItemCategoryRegistry itemCategoryRegistry = new BukkitItemCategoryRegistry();
 
     /**
      * Create a new instance.
@@ -48,6 +52,16 @@ class BukkitRegistries extends BundledRegistries {
         return biomeRegistry;
     }
 
+    @Override
+    public BlockCategoryRegistry getBlockCategoryRegistry() {
+        return blockCategoryRegistry;
+    }
+
+    @Override
+    public ItemCategoryRegistry getItemCategoryRegistry() {
+        return itemCategoryRegistry;
+    }
+
     /**
      * Get a static instance.
      *
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/CategoryRegistry.java b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/CategoryRegistry.java
index 1a54c7961..496893821 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/CategoryRegistry.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/CategoryRegistry.java
@@ -37,12 +37,4 @@ public interface CategoryRegistry<T> {
     Set<T> getCategorisedByName(String category);
 
     Set<T> getAll(final Category<T> category);
-
-    /**
-     * Gets a list of categories given to a value.
-     *
-     * @param categorised The value
-     * @return A set of categories
-     */
-    Set<String> getCategories(T categorised);
 }
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullBlockCategoryRegistry.java b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullBlockCategoryRegistry.java
index b26286498..4484d67d2 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullBlockCategoryRegistry.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullBlockCategoryRegistry.java
@@ -36,9 +36,4 @@ public class NullBlockCategoryRegistry implements BlockCategoryRegistry {
     public Set<BlockType> getAll(final Category<BlockType> category) {
         return Collections.emptySet();
     }
-
-    @Override
-    public Set<String> getCategories(BlockType categorised) {
-        return Collections.emptySet();
-    }
 }
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullItemCategoryRegistry.java b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullItemCategoryRegistry.java
index d047706c2..8eb5d9ee6 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullItemCategoryRegistry.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/NullItemCategoryRegistry.java
@@ -36,9 +36,4 @@ public class NullItemCategoryRegistry implements ItemCategoryRegistry {
     public Set<ItemType> getAll(final Category<ItemType> category) {
         return Collections.emptySet();
     }
-
-    @Override
-    public Set<String> getCategories(ItemType categorised) {
-        return Collections.emptySet();
-    }
 }