J5

J5 is an alphanumeric designation used in multiple, unrelated domains. The meaning of the label depends on the context in which it appears.

In consumer electronics, J5 most often refers to the Samsung Galaxy J5, a mid-range smartphone marketed by Samsung as part of the Galaxy J series. First released in 2015, the J5 has seen several regional variants and updates in the following years as Samsung expanded the line to cover various markets.

In mathematics, J5 denotes the Janko group J5, one of the sporadic simple groups identified in the 1960s by Zvonko Janko. It is part of the family of Janko groups that contributed to the broader study and classification of finite simple groups.

In transportation and infrastructure, J5 is used as a designator for a road junction or interchange in various highway networks. The exact location of a J5 interchange depends on the country and road system, and multiple networks may use the same label independently.

Other uses of J5 include assorted product model codes and branding that assign the J5 designation for cataloging or marketing purposes. The term thus functions as a versatile label across technology, mathematics, and transportation, with meanings specific to each field.