Windows NT 3.5x (Windows 3.5x) can refer to either an individual or following versions of Microsoft Windows:

• Windows NT 3.5 (1994-1995)
• Windows NT 3.51 (1995-1996)

This disambiguation page lists articles associated with the title Windows NT 3.5x. If an internal link led you here, you may wish to change the link to point directly to the intended article.