It can be, but it can also be a non-Jewish name.
no, mayer = mayor, it comes from the profession
Wookie Mayer's birth name is Dagmar Mayer.
Mayer Franck's birth name is Mayer Icek Franck.
Erskine Mayer's birth name is James Erskine Mayer.
Jeremy Mayer's birth name is Jeremy Matthew Mayer.
Nicole Mayer's birth name is Nicole Lena Mayer.
Sergio Mayer's birth name is Sergio Mayer Bretn.
Valentine Mayer's birth name is William Valentine Mayer.
Mayer Austerlitz has written: 'Des Gedenken gereicht zum Segen' -- subject(s): German Jewish sermons, Jewish sermons, German
Irene Mayer Selznick's birth name is Irene Mayer.
Jaimie Mayer Phinney's birth name is Jaimie Ariel Mayer.
Ruby Mayer's birth name is Myers, Ruby.