DOB is an abbreviation that stands for "date of birth". It is frequently used on official forms and in medical charting. In addition to this meaning, the term "DOB" has other meanings in different contexts. For example, in Australian and UK slang, "dob" can mean to report a person to someone in authority for a wrongdoing, or to nominate a person for an unpleasant task. However, these meanings are not related to the common usage of "DOB" as an abbreviation for "date of birth."