Lots of programs overlap classics and religion.
UBC
http://cnrs.ubc.ca/
FSU
http://religion.fsu.edu/graduate_fields.html#rwa
UNC
http://religion.unc.edu/graduate-studies/specialization/ancient-mediterranean-religions
Brown
http://www.brown.edu/academics/religious-studies/graduate/doctoral-tracks-phd/religions-ancient-mediterranean-ram
UT Austin
http://www.utexas.edu/cola/depts/rs/graduate/areas/ancient-Mediterranean.php
etc.
There's several interdisciplinary programs that combine classics and art history.
Johns Hopkins
http://classics.jhu.edu/graduate/interdepartmental-phd-program-in-classical-art-and-archaeology/
Penn
http://www.sas.upenn.edu/aamw/
Berkeley
http://ahma.berkeley.edu/
Michigan
http://www.lsa.umich.edu/ipcaa/
Chicago
http://arthistory.uchicago.edu/graduate/ancient-art
etc.
Interdisciplinary ancient history (classics and history) programs are also pretty popular. Penn Ancient History, Chicago PAMW, Michigan Greek & Roman History, etc.