The streaming wars have included a battle over the rights to many comic book properties, but it should come as no surprise that 2016's "Suicide Squad" is now streaming on HBO Max, because pretty much every Warner Bros./DC Entertainment property now calls that platform home. That'll be true of Gunn's "The Suicide Squad" too, as it's slated for a day-and-date release in theaters and on HBO Max on August 6. If you've been looking for a reason to give HBO Max a go, a pair of "Suicide Squad" movies is a great incentive.
Without HBO Max in your list of streaming services, you've still got a few options to watch the original "Suicide Squad" film. Those options will cost you, but you can rent "Suicide Squad" via iTunes, Amazon Prime Video, VUDU, Google Play, and Fandango Now. You could also buy your own digital copy of the film from various stores, but there's no guarantee that it will be yours to view forever. Your remaining option is physical media, so if you're looking to watch and re-watch "Suicide Squad" at your own free will for all eternity, you can pick up a new or used DVD or Blu Ray copy from any retailer that sells them.