Dad's Army: A Nostalgic Music and Laughter Show of Britain's Finest Hour was a 1975 stage adaptation of the BBC sitcom Dad's Army. Following the success of the television programme, the stage show was commissioned by Bernard Delfont in the spring of 1975.

Jimmy Perry and David Croft adapted material from the original scripts, making changes to allow for the absence of location filming. The show was in the style of a revue, with songs, familiar scenes from the show, and individual turns for cast members. It was produced by Roger Redfarn, who shared the same agent as the writers.

Jeffrey Holland, who would frequently collaborate with Croft in the future, portrayed multiple roles, whereas Richard Matthews was cast as the only two female roles in the 2007 tour. Croft was particularly pleased with the casting of Jack Haig as Lance Corporal Jones, since Haig had been Croft's first choice for the role when they cast the television series.

The show opened at the Forum Theatre, Billingham, County Durham on 4 September 1975 for a two-week try out. A local critic wrote of the event:

"The special bond of affection between cast and audience helped each item spark along" - Kevin Eason^[1]

After cuts and revisions, the show transferred to London's West End and opened at the Shaftesbury Theatre on 2 October 1975. On the opening night there was a surprise appearance by Chesney Allen, singing the old Flanagan and Allen song Hometown with Arthur Lowe.

The show ran in the West End until February 1976, where it was disrupted twice by bomb scares, and then toured the country until 4 September 1976. The stage show was later revived, billed as Dad’s Army—The Musical, and toured Australia and New Zealand in 2004–2005, starring Jon English.

In April 2007 a new Dad's Army stage show was announced. It featured two lost^[3] episodes ("The Loneliness of the Long Distance Walker" and "A Stripe for Frazer") combined with two additional episodes "Room at the Bottom" (of which only a black-and-white version survived, until its colour was recreated in December 2008) and "The Deadly Attachment".^[4] A sequel to the 2007 stage show was announced in December 2009 with the tour starting the following year. It features the same cast as the 2007 show, but has different episodes, including "Branded" and "Mum's Army".