There isn't a single defining interpretation of "MPA," but it is an acronym for a graduate university degree called a Master of Public Administration. Master in Professional Accounting is another education credential with the acronym MPA.
Other possible meanings of MPA include Mean Predicted Area, Market Potential Analysis, Marine Protected Area, Metropolitan Planning Area and Metropolitan Police Authority. Acronym and abbreviation directories list dozens.of alternatives for this three letter combination. Some are slang terminology and others are names of organizations. Higher education, science, math, business, military and government are just some of the domains where the acronym MPA might apply.