The meaning of the Acronym OG is...

OG is

• Old Guyor
• Order Of Gownsmen
• Over Gold
• Oh God
• Ookie Globals
• Original Gamer
• Orton Gillingham
• Old Girls
• Official Guide
• Orienation Group
• Original Gansta
• Original Gimmick
• Operation Girafarig
• Odyssey Gaming
• Original Glutton
• Over Grow
• Original Gangstsa
• Old Git
• Old Gang
• Original Garch
• Octavius Gilchrist
• Output Grammar

More Meanings For OG:

• Original Gravity
• Organic Gardening
• Optimal Guess
• Observational Game
• Orientation Group
• Oriental Grill
• Operating Grant
• Ogden Corporation
• Original Gangster
• Original Gangsta
• Old Guy
• Organ Grinder
• Old Girl
• Old Gangster
• Old Gorgeous

OG is also in:

• Astronomy
• Botany
• Famous
• Firms
• General
• Mathematics
• NYSE Symbols
• Physics
• Positions