Can I do MBA in finance or marketing after completing my B.Des in interior design?

Sure. Any graduate can do MBA. And the specialisation depends on the particular institute you are in. If you score well in your first year MBA, then you can choose any specialisation you want. Choosing a good college for MBA is highly necessary as good colleges have good placement. Appear for CAT or

Hello, You can certainly apply for MBA in any specialisation you want. You should have minimum 50 percent in your Bachelor to be eligible to apply for MBA entrance exams.