diff --git a/src/main/java/com/sk89q/worldguard/bukkit/WorldGuardPlayerListener.java b/src/main/java/com/sk89q/worldguard/bukkit/WorldGuardPlayerListener.java
index 333ae009..aef9d236 100644
--- a/src/main/java/com/sk89q/worldguard/bukkit/WorldGuardPlayerListener.java
+++ b/src/main/java/com/sk89q/worldguard/bukkit/WorldGuardPlayerListener.java
@@ -20,6 +20,7 @@
 
 import static com.sk89q.worldguard.bukkit.BukkitUtil.toVector;
 import java.util.Iterator;
+import java.util.Set;
 import java.util.logging.Logger;
 
 import org.bukkit.ChatColor;
@@ -84,6 +85,7 @@ public void registerEvents() {
         registerEvent("PLAYER_ITEM_HELD", Priority.High);
         registerEvent("PLAYER_BED_ENTER", Priority.High);
         registerEvent("PLAYER_MOVE", Priority.High);
+        registerEvent("PLAYER_COMMAND_PREPROCESS", Priority.High);
     }
 
     /**
@@ -885,4 +887,30 @@ public void onPlayerBedEnter(PlayerBedEnterEvent event) {
             }
         }
     }
+
+    /**
+     * Called on command run.
+     */
+    @Override
+    public void onPlayerCommandPreprocess(PlayerCommandPreprocessEvent event) {
+        Player player = event.getPlayer();
+        World world = player.getWorld();
+        ConfigurationManager cfg = plugin.getGlobalStateManager();
+        WorldConfiguration wcfg = cfg.get(world);
+
+        if (wcfg.useRegions) {
+            Vector pt = toVector(player.getLocation());
+            RegionManager mgr = plugin.getGlobalRegionManager().get(world);
+            ApplicableRegionSet set = mgr.getApplicableRegions(pt);
+
+            String[] parts = event.getMessage().split(" ");
+
+            Set<String> blockedCommands = set.getFlag(DefaultFlag.BLOCKED_CMDS);
+            if (blockedCommands != null && blockedCommands.contains(parts[0].toLowerCase())) {
+                player.sendMessage(ChatColor.RED + parts[0].toLowerCase() + " is blocked in this area.");
+                event.setCancelled(true);
+                return;
+            }
+        }
+    }
 }
diff --git a/src/main/java/com/sk89q/worldguard/protection/flags/CommandStringFlag.java b/src/main/java/com/sk89q/worldguard/protection/flags/CommandStringFlag.java
new file mode 100644
index 00000000..589a1a8c
--- /dev/null
+++ b/src/main/java/com/sk89q/worldguard/protection/flags/CommandStringFlag.java
@@ -0,0 +1,62 @@
+// $Id$
+/*
+ * WorldGuard
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.sk89q.worldguard.protection.flags;
+
+import org.bukkit.command.CommandSender;
+import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
+
+/**
+ *
+ * @author sk89q
+ */
+public class CommandStringFlag extends Flag<String> {
+    
+    public CommandStringFlag(String name, char legacyCode) {
+        super(name, legacyCode);
+    }
+
+    public CommandStringFlag(String name) {
+        super(name);
+    }
+
+    @Override
+    public String parseInput(WorldGuardPlugin plugin, CommandSender sender,
+            String input) throws InvalidFlagFormat {
+        input = input.trim();
+        if (!input.startsWith("/")) {
+            input = "/" + input;
+        }
+        return input.toLowerCase();
+    }
+
+    @Override
+    public String unmarshal(Object o) {
+        if (o instanceof String) {
+            return (String) o;
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public Object marshal(String o) {
+        return o;
+    }
+    
+}
diff --git a/src/main/java/com/sk89q/worldguard/protection/flags/DefaultFlag.java b/src/main/java/com/sk89q/worldguard/protection/flags/DefaultFlag.java
index 1c0b4272..9246477a 100644
--- a/src/main/java/com/sk89q/worldguard/protection/flags/DefaultFlag.java
+++ b/src/main/java/com/sk89q/worldguard/protection/flags/DefaultFlag.java
@@ -62,6 +62,7 @@ public final class DefaultFlag {
     public static final RegionGroupFlag SPAWN_PERM = new RegionGroupFlag("spawn-group");
     public static final BooleanFlag BUYABLE = new BooleanFlag("buyable");
     public static final DoubleFlag PRICE = new DoubleFlag("price");
+    public static final SetFlag<String> BLOCKED_CMDS = new SetFlag<String>("blocked-cmds", new CommandStringFlag(null));
 
     public static final Flag<?>[] flagsList = new Flag<?>[] {
         PASSTHROUGH, BUILD, PVP, MOB_DAMAGE, MOB_SPAWNING, CREEPER_EXPLOSION, SLEEP,
@@ -69,7 +70,7 @@ public final class DefaultFlag {
         USE, PLACE_VEHICLE, GREET_MESSAGE, FAREWELL_MESSAGE, NOTIFY_ENTER,
         NOTIFY_LEAVE, DENY_SPAWN, HEAL_DELAY, HEAL_AMOUNT, TELE_LOC,
         TELE_PERM, SPAWN_LOC, SPAWN_PERM, BUYABLE, PRICE, SNOW_FALL, LEAF_DECAY,
-        GHAST_FIREBALL
+        GHAST_FIREBALL, BLOCKED_CMDS
     };
     
     private DefaultFlag() {