Here's a full list of all Alien, Predator and AvP films that have been released on DVD and Blu-Ray. The list is sorted into region 1 and 2 and then by series.

Region 1

• Alien
  Alien Boxsets
  Includes Alien Triple Pack, Alien Quadrilogy and Alien Legacy Boxsets.
  Alien
  Includes Lenticular Packaging, Collector's Edition & Original DVD.
  Aliens
  Includes Collector's Edition & Original DVD.
  Alien 3
  Includes Collector's Edition & Original DVD.
  Alien Resurrection DVDs
  Includes Collector's Edition & Original DVD.
  
  
• Predator
  Predator Boxsets
  Includes Predator Boxset (2007).
  Predator
  Includes Blu-Ray, Lenticular Packaging, Collector's Edition & Original DVD.
  Predator 2
  Includes Collector's Edition & Original DVD.
  
  
• AvP
  AvP Boxsets
  Includes AvP/AvPR Boxset (DVD & Blu-Ray).
  Alien vs Predator
  Includes Lenticular Packaging, Unrated Edition, Regular Edition, and Limited Edition.
  Aliens vs Predator Requiem
  Includes Rated, Unrated, Unrated 2-Disc Set.
  
  
• Other
  Hybrid Boxsets
  Includes Predator Triple Feature (2008), AvP: The Ultimate Showdown, Predator Triple Feature (2007).

Region 2

• Alien
  Alien Boxsets
  Includes Aliens / Alien Resurrection, Alien Quadrilogy 'Alien Head', Alien Quadrilogy and Alien Legacy Boxsets.
  Alien
  Includes Definitive Edition, Director's Cut & Original DVD.
  Aliens
  Includes Definitive Edition, Special Edition & Original DVD.
  Alien 3
  Includes Definitive Edition, Special Edition & Original DVD.
  Alien Resurrection
  Includes Definitive Edition, Special Edition & Original DVD.
  
  
• Predator
  Predator Boxsets
  Includes Predator Boxset (2005), Predator Boxset (2004) & Predator Boxset (2001).
  Predator
  Includes Blu-Ray, Definitive Edition, Special Edition & Original DVD.
  Predator 2
  Includes Definitive Edition, Special Edition & Original DVD.
  
  
• AvP
  AvP Boxsets
  Includes AvP/AvPR DVD Boxset, AvP/AvPR Blu-Ray Boxset.
  Alien vs Predator
  Includes Definitive Edition, Blu-Ray, Extreme Edition & Regular Edition.
  Aliens vs Predator Requiem
  Includes Blu-Ray, Extended Combat Edition, Regular Edition.
  
  
• Other
  Hybrid Boxsets
  Includes Ultimate A&P Collector's Edition, Predator Deluxe Head, AvP / Aliens / Predator, AvP Monster Box, Aliens/Predator.