The annual award - £100 cash and a year's subscription to ATG - goes to the student who produces the most innovative final thesis.
The Kingston course, accredited by the Royal Institution of Chartered Surveyors, has been running for seven years and is the only accredited masters in art appraisal worldwide.
It provides a comprehensive introduction to the art market, its history, underlying economics and codes of professional practice, preparing students for a broad range of careers in the global market and cultural industries. The course also leads to entry to the RICS as a probationary member.
Dr Tom Flynn, director of the MA course, said: "We have long enjoyed strong ties with the ATG, which is a staunch supporter of the Kingston Masters course, and we are delighted that they have offered our students this encouraging prize."
The first ATG Dissertation Prize will be awarded in the autumn.