Depends on what one considers UNIX.

https://en.m.wikipedia.org/wiki/Amiga_Unix

The Amiga 3000 and 2000 can run Amix, a port of Unix System V Release 4.

https://www.amigaunix.com/doku.php/home

Hah! We had ixemul.library and the geekgadgets distro back in the day! Full bizare GNU+BSD userland on top of AmigaOS!