The following graduate schools offer doctoral programs in the following fields of study: educational technology, instructional technology, educational multimedia, or learning technology. The web site links on this page were all checked for accuracy. However, I did not search each school's web site to confirm graduate programs are being offered. The majority of schools are in the US and only two doctoral programs are offered in Canada in Educational Technology.
Source:
Orey, M. M., V.J.; Branch, R., Ed. (2009). Educational Media and Technology Yearbook. New York, NY, Springer.