CG or Cg may stand for:

• Chappe et Gessalin, a French automobile maker
• computer graphics
• the Cg programming language
• Republic of the Congo (ISO country code)
• the US Navy hull classification symbol for guided missile cruisers
• center of gravity
• CG artwork, a primarily Japanese art form
• Configuration Guide , a document used to detail an environment when deploying software to ensure that all pre-requisites and dependancies are known