Are Acupuncture costs an allowable medical expense in Ontario?

Yes.  Fees paid to an acupuncturist are considered an eligible medical expense if you are a resident of Ontario.  For further info, please see http://www.cra-arc.gc.ca/tx/ndvdls/tpcs/ncm-tx/rtrn/cmpltng/ddctns/lns300-350/330-331/ampp-eng.html

Thank you for your question.

A full list of eligible medical expenses is available here: http://www.cra-arc.gc.ca/medical/

If you do not see your medical expense on this list, you may need to contact the CRA: http://www.cra-arc.gc.ca/cntct/menu-eng.html