Is it correct to list Master's Candidate or Masters Candidate on a resume?

candidate for

Masters candidate are completing the requirements for the masters degree. ABDs typically have all of the requirements for a PhD except that they haven't completed their dissertation.

There are some schools that award honors at the graduate level, but they are rare.

The abbreviation really depends on the school you attended and the specific program of study. Thus, some examples are as follows. John Smith M.A. John Smith M.S. John Smith M.Sc. John Smith M.Ed....

I have seen both used.