The funding has been provided by Aberdeenshire Council and Visit Scotland.
The event will attract approximately 350 international delegates when it takes place in July 2016.
The IIFET Conference was secured through Team Aberdeenshire, a partnership of local and national businesses, including Aberdeenshire Council, VisitAberdeen and VisitScotland, to help bring events to the region.
Brian Horsburgh, managing director, AECC, said: "The partnership working with Team Aberdeen, as well as subvention funding from local bodies such as Aberdeenshire Council and tourism body VisitScotland is crucial for association organisers when looking at host cities for their events and we are particularly lucky to have such a strong partnership approach with Team Aberdeen here in the North East of Scotland."
The IIFET Conference, which this year takes place in Brisbane, Australia, focuses on the economics of fishery management, seafood markets and trade and development and aquaculture.