The festival, which is run in conjunction with Fáilte Ireland and 'Taste the Island', is expected to generate a significant amount of revenue for the city with a variety of fun events set to take place between Friday, September 20 and Sunday, September 22.
One of the most anticipated events this year is the second annual 'All Ireland Oyster Shucking Competition'.
In addition, there will be music from Paddy Casey and The Frank and Walters.
Festival organiser, Sandra Murphy of Trigon Hotels said: "This is a very special festival for Cork and it is proving to be a huge success.
"We are especially excited this year that so many fantastic venues are taking part in the events over the weekend.
"It is a real team effort from Cork and it rivals some of the biggest festivals in Ireland."
Tickets for all events are on sale on Eventbrite and more details on www.corkoysterfestival.com