The Vicar of Dibley star will be at the Underneath The Stars festival at Cinderhill Farm in Cawthorne on Sunday afternoon.
Dawn will be talking about her career as a writer, comedian and author in the popular afternoon question and answer slot which has previously been taken by fellow comics Jason Manford and Ruth Jones.
Dawn is part of a stacked programme as the family-friendly folk festival returns after skipping a year due to the pandemic.
Singer Paul Carrack headlines on Friday night, Saving Grace - featuring Led Zeppelin superstar Robert Plant and Suzi Dian - take centre stage on Saturday before local hero Kate Rusby rounds off the weekend on Sunday.
Full story: page 13.