Witness streaming: where to watch online?
Currently you are able to watch "Witness" streaming on fuboTV, Paramount Plus, Paramount+ Amazon Channel, Paramount+ Roku Premium Channel. It is also possible to buy "Witness" on Amazon Video, Apple TV, Fandango At Home, Microsoft Store as download or rent it on Microsoft Store, Amazon Video, Apple TV, Fandango At Home, Spectrum On Demand online.
You can also stream the title for free on Hoopla, Kanopy.