PC-UX

{{distinguish|text=PC/IX for IBM PC XT}}

{{Infobox OS

| name = PC-UX

| developer = NEC

| family = Unix

| working state = Discontinued

| supported platforms = APC III, PC-9801

}}

PC-UX was a discontinued NEC port of UNIX System III{{Cite web |url=http://www006.upp.so-net.ne.jp/tati/docs/48summary.txt |title=Archived copy |access-date=2014-02-15 |archive-date=2016-03-03 |archive-url=https://web.archive.org/web/20160303233634/http://www006.upp.so-net.ne.jp/tati/docs/48summary.txt |url-status=dead }} for their APC IIICreative Computing, Volume 11 Number 02 (February 1985), [https://archive.org/details/creativecomputing-1985-02], page 62 and PC-9801 personal computer. PC-UX possessed extensive graphics capabilities at the time of its release. PC-UX and MS-DOS could reside on the same hard drive, with PC-UX containing transfer utilities that allowed for file transfers to MS-DOS.

In 1985, the suggested retail price for PC-UX on APC III was $700.

NEC's subsequent port of UNIX System V was called PC-UX/V.