Charles Beverley "Bev" Koester, OC CD (January 13, 1926 – February 1, 1998) was a Canadian naval officer, civil servant and Clerk of the House of Commons of Canada.
He served during the Second World War in Scotland, and in 1945 was involved in the liberation of Oslo and Copenhagen.
He was the author of Footprints in Time – Saskatchewan (House of Grant, Canada, 1965); Mr. Davin MP (Western Producer Prairie Books, 1980);[1] The Measure of the Man (Western Producer Prairie Books, 1976) and the editor of Bourinot's Rules of Order, a handbook on Canadian parliamentary procedure.
He was the first clerk of the Canadian House of Commons who was a career civil servant.
During his time as clerk, television cameras were introduced into the House of Commons.