He takes up the post on May 14, succeeding Ian Beales who announced his resignation last week after 20 years as editor and 34 on the paper.
Mr Manners said: “The Western Daily Press is a legendary title in the world of journalism and I am extremely proud to be taking the chair.
“I will be building on the strong foundations laid by Ian and his editorial team.
“I hope to bring all the energy, enthusiasm and professionalism of Fleet Street to the newsroom in a targeted drive on layout, content and promotions and I look forward to working with the talented people there who care about their paper so much.”
Northcliffe Newspapers managing director Alec Davidson said: “Ian Beales has been with the paper for 34 years, the last 20 of them as editor.
“During that time, the newspaper has won many awards, including BT South West Newspaper of the Year Award for the fourth time earlier this month.
“He leaves the newspaper this week. His departure marks the end of a remarkable career with the paper and I am very grateful to him for all his work.
“Terry Manners, 53, has had a long career in Fleet Street. He was formerly editor in chief of Express Newspapers in Scotland and assistant editor of the paper in London.
“He was also night editor of the title for five years and served on the back bench of the Sunday Express for Sir John Junor and Robin Esser.”
Mr Beales said: “I am very pleased to hear of Terry Manners’ appointment. I think he is absolutely right for the Western Daily Press and I wish him well for the future.”
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