Born as Alexander Neilson Horsburgh in Shettleston, Glasgow, he joined his brother Archie and sister June in an acrobatic act called The Star Trio.
They later changed their name to The Horsburgh Brothers and Agnes and became part of Florrie Forde's music hall company with Flanagan and Allen.
During World War Two, Munro toured with the RAF show, Contact, and had his own BBC radio series The Size of It.
He headlined in a number of British variety theatres, before finally making his home in Llandudno, Wales.
The Alex Munro Show ran at the Happy Valley in Llandudno for 30 years.