The actor passed away in Portugal today (November 7) after suffering from complications following an operation earlier this week.
Dunn was best known for his role in sitcom Dad's Army as Lance-Corporal Jack Jones, famous for his "don't panic" and "permission to speak" catchphrases.
Dad's Army ran from 1968 to 1977 and Dunn featured in all nine series and a 1971 spinoff movie.
> 'Dad's Army's Clive Dunn, 1920-2012: Obituary
The surviving cast of the show reunited in 2008 to mark the programme's 40th anniversary.
"My wife saw the first episode and said this is going to be a huge success and I always do what she says," Dunn said of joining the sitcom.
Photo gallery - Clive Dunn's life and career:
Copyright: WENNBefore he was cast in Dad's Army, Dunn had several movie roles, including Boys Will Be Boys and Good Morning Boys.
He recorded a number of songs, and hit the top of the singles charts with 'Grandad' in 1970, written by well-known bassist and session musician Herbie Flowers.
One of Dunn's last TV roles was as Charlie 'Grandad' Quick in the sitcom Grandad, which ran from 1979 to 1984, after which the star effectively retired.
Born in London on January 9, 1920, Dunn fought in the Second World War and at the age of 20 was captured by the Germans in Greece and subsequently held for four years as a prisoner in Austria.
A well-known socialist, Dunn accepted an OBE for his services to drama in 1975.
His memoir Permission to Speak was published in 1986 and followed by anecdote collection Permission to Laugh in 1996.
Dunn is survived by his wife Priscilla Morgan and two daughters, Jessica and Polly.
Watch Clive Dunn perform 'Grandad' live on Top of the Pops below: