Jack Haig (born John Cecil Coppin; 5 January 1913 – 4 July 1989) was an English actor who specialised in supporting roles, mainly in television comedy.

He was seen in a long list of British television favourites including: Hugh and I, Are You Being Served?, Terry and June and Dad's Army (although he turned down the role of Corporal Jones which then went to Clive Dunn) .

His last appearance was in the final episode of series 5, where he impersonated a Spanish guitarist, alongside Kenneth Connor (Monsieur Alfonse), who had an Enigma machine hidden in his accordion.

He appeared in pantomime at Wimbledon in Babes in the Wood in 1965 and again in 1967 as the Emperor of China in Aladdin alongside Bruce Forsyth and Tommy Trinder.

His wife was revue actress Sybil Dunn, who had died the previous year, just two days before their golden wedding anniversary.