Where to watch Diagnosis: Unknown (1960)
In US, Diagnosis: Unknown is streaming on Amazon Prime Video, Amazon Prime Video with Ads, Shout! Factory Amazon Channel.
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| Country | Stream (subscription) | Free | Free with ads | Rent | Buy |
|---|---|---|---|---|---|
| US |  Amazon Prime Video  Amazon Prime Video with Ads  Shout! Factory Amazon Channel | — |  Amazon Prime Video Free with Ads  Cineverse  Tubi TV  Amazon MX Player | — |  Google Play Movies |
| GB | Amazon Prime Video Amazon Prime Video with Ads | — | Amazon Prime Video Free with Ads Amazon MX Player | — |  Amazon Video |
| CA | Amazon Prime Video Amazon Prime Video with Ads | — | Tubi TV Cineverse | — | — |
| AU | Amazon Prime Video Amazon Prime Video with Ads | — | Tubi TV | — | — |
| IE | Amazon Prime Video | — | — | — | — |
| MX | — | — |  Pluto TV | — | — |
Availability data via JustWatch through TMDB. Listings change often — last refreshed 5 Nov 2026.