120 (one hundred [and] twenty) is the natural number following 119 and preceding 121. It is five sixths of a gross, or ten dozens. In the Germanic languages, the number 120 was also formerly known as "one hundred". This "hundred" of six score is now obsolete but is described as the long hundred or great hundred in historical contexts.

In mathematics

120 is

In science

120 is the atomic number of unbinilium, an element yet to be discovered. In electrical engineering, each line of the three-phase system are 120 degrees apart from each other. Three soap films meet along a Plateau border at 120° angles.

In religion

In sports

In other fields

120 is also: