|Release date||26 October 2009 (Update)|
|Removal date||9 November 2009 (Update)|
|Race||Deadly red spider|
|Examine||Chief architect of the Spider Realm.|
|Infobox • Talk page|
Master Web-Spinner is a spider located in the Spider Courtroom area of the Spider Realm during the 2009 Hallowe'en event. It appears identical to a deadly red spider. The Master Web-Spinner is the chief architect of the spider realm, as well as being a member of the Spider Court. Being the chief architect, it probably devised the web-based obstacles that players have to overcome to reach the court. Despite being an NPC, the Master Web-Spinner cannot be talked to.