List your designation in the "Education" section of your resume. Spell out the designation as "Master of Business Administration," or use the abbreviated version as "MBA."
List your name and designation separated by a comma on your business cards. For example, you may list "John Doe, MBA." While this usage is acceptable, it is not necessary, so it may be frowned upon by some.
Find a way to casually mention your designation while in the midst of salary negotiations. For example, you might compare a business accomplishment to the process of getting your MBA.