Level 3 may refer to:

• Level 3 (Last Chance to Reason album), 2013
• Level3 (Perfume album), 2013

• Biosafety level 3, a containment procedure for dangerous biological materials
• Keyboard level 3, usually consisting of a set of characters input using the AltGr key
• Level 3 driving automation in an autonomous car
• Level III data of the U.S. National Weather Service's NEXRAD weather radar
• Level 3 charging, also known as DC fast charging, supports charging up to 500 volts.

• Level 3 (TV series), an Australian television series about video games
• Level 3 Communications, an Internet service provider
• An academic qualification, such as:
  • Business and Technology Education Council#School leaving qualification (Level 3)
• Level 3 coronavirus restrictions, see COVID-19 pandemic in Scotland#Levels System
• STANAG 4569 protection level

• All pages with titles beginning with Level 3
• All pages with titles containing Level 3

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