Level 4 or Level Four or Level IV may refer to: Technology Level 4, a level of automation in a self-driving car (see Autonomous car#Classification) Level 4, the transport layer in the OSI model of computer communications
Gradation Level 4 Biosafety level Level 4 trauma center Music LVL IV album by Future Leaders of the World 2004 Level 4 (Globe album)
Other uses Level 0 coronavirus restrictions, see COVID-19 pandemic in Scotland#Levels System STANAG 4569 protection level