The meaning of the Acronym OB is...

OB is

• Obnoxious Because
• Old Buddy

More Meanings For OB:

• Oligosaccharide Binding
• Optical Bar
• Outer Banks
• Organizational Behavior
• Operating Budget
• Outta Business
• Organisational Behaviour
• Organization Behavior
• Obstetrician
• Outside Broadcast
• Original Broadcast
• Outdoor Broadcast
• Operation Blessing
• Out Of Bounds
• Offensive Bonus

OB is also in:

• Chemistry
• Electronics
• General
• Media
• Non-Profit Organizations
• Ocean Science
• Positions
• Sports