The two agencies go through to a final round after an initial phase that also included fellow incumbents Starcom and Aegis Media.
A final decision on the $650m business is expected by early December. At present, OMD handles the company's business in Asia-Pacific and the US, while MEC is in charge of Europe, according to Media Asia.
Starcom currently holds the account in Canada, while the Aegis relationship is via its Velocity sports marketing agency. The brief calls for a particular focus on Visa's Fifa sponsorship strategy (Media, 11 September).
Visa recently appointed Antonio Lucas as its first global CMO, following the departure of EVP of global brand marketing John Elkins.