The abbreviation "AB" can have several meanings depending on its context.
- In some countries, it is used to denote a person's academic degree, such as Bachelor of Arts (BA) or Bachelor of Science (BS). For example, John Smith might be referred to as J.D. AB if he holds a Juris Doctorate degree.
- It can also stand for "After Breakfast" in medical terminology when referring to blood sugar levels measured after consuming food in the morning.
- In some organizations or companies, it may represent an abbreviation of the organization's name (e.g., AB Bank Limited).