8U

8U or 8-U may refer to:


 * 8U, IATA code for Afriqiyah Airways
 * One of the possible sizes of a rack unit
 * F8U, a model of Vought F-8 Crusader
 * RG-8U, a type of coaxial cable
 * HP 8U, Roman-8 character set by Hewlett-Packard