AM, Am, or am may refer to: Master of Arts (postgraduate), (Artium Magister) alternative abbreviation for a Master's degree in Arts Americium, a chemical element with symbol Am Assembly Member, member of the regional government for London, United Kingdom. Arthur–Merlin protocol, an interactive proof system in computational complexity theory Automated Mathematician, an artificial intelligence program Attometre (am), a unit of length (equal to 10–18 m) Order of Australia member… (More on Am)