diff --git a/Changelog.txt b/Changelog.txt
index cb114e7c4..34e78e33a 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -12,6 +12,7 @@ Version 1.3.04-dev
  + Added McMMOPlayerRepairCheckEvent for API usage - fires before repair process begins, can be cancelled.
  + Added ability to get skill level from McMMOPlayerExperience events
  + Added McMMOPartyTeleportEvent for API usage - fires before a successful teleportation would occur.
+ + Added McMMOPartyChangeEvent for API usage - fires whenever a player joins or leaves a party
  = Fixed Shake ability dropping bonemeal instead of ink for squids.
  = Fixed Green Terra & Super Breaker awarding 4x drops at high levels.
  = Fixed summoned ocelots never changing skins.
diff --git a/src/main/java/com/gmail/nossr50/commands/party/AcceptCommand.java b/src/main/java/com/gmail/nossr50/commands/party/AcceptCommand.java
index 645458b44..d868de26e 100644
--- a/src/main/java/com/gmail/nossr50/commands/party/AcceptCommand.java
+++ b/src/main/java/com/gmail/nossr50/commands/party/AcceptCommand.java
@@ -1,5 +1,6 @@
 package com.gmail.nossr50.commands.party;
 
+import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
@@ -9,6 +10,8 @@ import org.bukkit.entity.Player;
 import com.gmail.nossr50.Users;
 import com.gmail.nossr50.mcPermissions;
 import com.gmail.nossr50.datatypes.PlayerProfile;
+import com.gmail.nossr50.events.party.McMMOPartyChangeEvent;
+import com.gmail.nossr50.events.party.McMMOPartyChangeEvent.EventReason;
 import com.gmail.nossr50.locale.mcLocale;
 import com.gmail.nossr50.party.Party;
 
@@ -33,10 +36,25 @@ public class AcceptCommand implements CommandExecutor {
 			Party Pinstance = Party.getInstance();
 
 			if (PP.inParty()) {
+                McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, PP.getParty(), PP.getInvite(), EventReason.CHANGED_PARTIES);
+                Bukkit.getPluginManager().callEvent(event);
+
+                if (event.isCancelled()) {
+                    return true;
+                }
+
 				Pinstance.removeFromParty(player, PP);
 			}
-			PP.acceptInvite();
-			Pinstance.addToParty(player, PP, PP.getParty(), true);
+			else {
+                McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, null, PP.getInvite(), EventReason.JOINED_PARTY);
+                Bukkit.getPluginManager().callEvent(event);
+
+                if (event.isCancelled()) {
+                    return true;
+                }
+			}
+            PP.acceptInvite();
+            Pinstance.addToParty(player, PP, PP.getParty(), true);
 
 		} else {
 			player.sendMessage(mcLocale.getString("mcPlayerListener.NoInvites"));
diff --git a/src/main/java/com/gmail/nossr50/commands/party/PartyCommand.java b/src/main/java/com/gmail/nossr50/commands/party/PartyCommand.java
index 5761f2ef3..6fbfcd69e 100644
--- a/src/main/java/com/gmail/nossr50/commands/party/PartyCommand.java
+++ b/src/main/java/com/gmail/nossr50/commands/party/PartyCommand.java
@@ -10,6 +10,8 @@ import org.bukkit.entity.Player;
 import com.gmail.nossr50.Users;
 import com.gmail.nossr50.mcPermissions;
 import com.gmail.nossr50.datatypes.PlayerProfile;
+import com.gmail.nossr50.events.party.McMMOPartyChangeEvent;
+import com.gmail.nossr50.events.party.McMMOPartyChangeEvent.EventReason;
 import com.gmail.nossr50.locale.mcLocale;
 import com.gmail.nossr50.party.Party;
 
@@ -109,10 +111,18 @@ public class PartyCommand implements CommandExecutor {
 			return true;
 		} else if (args.length == 1) {
 			if (args[0].equals("q") && PP.inParty()) {
-				Pinstance.removeFromParty(player, PP);
 
+                McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, PP.getParty(), null, EventReason.LEFT_PARTY);
+                Bukkit.getPluginManager().callEvent(event);
+
+                if (event.isCancelled()) {
+                    return true;
+                }
+
+				Pinstance.removeFromParty(player, PP);
 				player.sendMessage(mcLocale.getString("mcPlayerListener.LeftParty"));
 				return true;
+
 			} else if (args[0].equalsIgnoreCase("?")) {
 				player.sendMessage(mcLocale.getString("Party.Help4", new Object[] { "/party " }));
 				player.sendMessage(mcLocale.getString("Party.Help2", new Object[] { "/party " }));
@@ -148,8 +158,23 @@ public class PartyCommand implements CommandExecutor {
 				// Pinstance.dump(player);
 			} else {
 				if (PP.inParty()) {
+				    McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, PP.getParty(), args[0], EventReason.CHANGED_PARTIES);
+				    Bukkit.getPluginManager().callEvent(event);
+
+				    if (event.isCancelled()) {
+				        return true;
+				    }
+
 					Pinstance.removeFromParty(player, PP);
 				}
+				else {
+                    McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, null, args[0], EventReason.JOINED_PARTY);
+                    Bukkit.getPluginManager().callEvent(event);
+
+                    if (event.isCancelled()) {
+                        return true;
+                    }
+				}
 				Pinstance.addToParty(player, PP, args[0], false);
 				return true;
 			}
@@ -186,6 +211,13 @@ public class PartyCommand implements CommandExecutor {
 							}
 							PlayerProfile tPP = Users.getProfile(tPlayer);
 
+			                McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, tPP.getParty(), null, EventReason.KICKED_FROM_PARTY);
+			                Bukkit.getPluginManager().callEvent(event);
+
+			                if (event.isCancelled()) {
+			                    return true;
+			                }
+
 							Pinstance.removeFromParty(tPlayer, tPP);
 
 							tPlayer.sendMessage(mcLocale.getString("mcPlayerListener.LeftParty"));
@@ -213,10 +245,22 @@ public class PartyCommand implements CommandExecutor {
 					player.sendMessage(mcLocale.getString("Party.NotOwner"));
 				}
 			} else {
+                McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, PP.getParty(), args[0], EventReason.CHANGED_PARTIES);
+                Bukkit.getPluginManager().callEvent(event);
+
+                if (event.isCancelled()) {
+                    return true;
+                }
 				Pinstance.removeFromParty(player, PP);
 				Pinstance.addToParty(player, PP, args[0], false, args[1]);
 			}
 		} else if (args.length == 2 && !PP.inParty()) {
+            McMMOPartyChangeEvent event = new McMMOPartyChangeEvent(player, null, args[0], EventReason.JOINED_PARTY);
+            Bukkit.getPluginManager().callEvent(event);
+
+            if (event.isCancelled()) {
+                return true;
+            }
 			Pinstance.addToParty(player, PP, args[0], false, args[1]);
 		}
 
diff --git a/src/main/java/com/gmail/nossr50/events/party/McMMOPartyChangeEvent.java b/src/main/java/com/gmail/nossr50/events/party/McMMOPartyChangeEvent.java
new file mode 100644
index 000000000..09e644f39
--- /dev/null
+++ b/src/main/java/com/gmail/nossr50/events/party/McMMOPartyChangeEvent.java
@@ -0,0 +1,65 @@
+package com.gmail.nossr50.events.party;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+
+public class McMMOPartyChangeEvent extends PlayerEvent implements Cancellable{
+
+    protected String oldParty;
+    protected String newParty;
+    protected EventReason reason;
+    protected boolean cancelled;
+
+    public McMMOPartyChangeEvent(Player player, String oldParty, String newParty, EventReason reason) {
+        super(player);
+        newParty = newParty.replace(":", ".");
+        this.oldParty = oldParty;
+        this.newParty = newParty;
+        this.reason = reason;
+        this.cancelled = false;
+    }
+
+    public String getOldParty() {
+        return oldParty;
+    }
+
+    public String getNewParty() {
+        return newParty;
+    }
+
+    public EventReason getReason() {
+        return reason;
+    }
+
+    /** Rest of file is required boilerplate for custom events **/
+    private static final HandlerList handlers = new HandlerList();
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    /** Following are required for Cancellable **/
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
+
+    public enum EventReason{
+        JOINED_PARTY,
+        LEFT_PARTY,
+        KICKED_FROM_PARTY,
+        CHANGED_PARTIES;
+    }
+}