John Lennox will make his first appearance at Worldwide on the closing night, which sees a change of venue to the Waterfront Hall in Belfast.
The convention opened there in 2011 and it is hoped the return visit will be another successful venture.
Maud Kells, George from Open Doors and J.H. Taylor will also be particpating with music led by New Irish Arts and Alistair Hamill and band.
Tickets, priced £12.50, are available from the Waterfront website, or from the box office on 028 9033 4455.
Book early to avoid disappointment.