The Siege

The Siege may refer to:

Events

 * The First Siege of Atlantis, the attack of the Wraith over Atlantis against the Ancients which occured 10,000 years ago
 * The Second Siege of Atlantis, the attack of the Wraith over Atlantis against the Tau'ri in 2005

Episodes

 * , 19th episode of Stargate Atlantis Season 1
 * , 20th episode of Stargate Atlantis Season 1, direct following of the previous one and season's finale
 * , 1st episode of Stargate Atlantis Season 2, direct following of the previous one and season's premiere