Monarch — Victoria
Secretary for Scotland and Keeper of the Great Seal — Lord Balfour of Burleigh
Lord Advocate — Andrew Murray
Solicitor General for Scotland — Charles Dickson
Lord President of the Court of Session and Lord Justice General — Lord Blair Balfour
Lord Justice Clerk — Lord Kingsburgh
23 March — SS Sir Walter Scott enters excursion service on Loch Katrine.
23 April–12 May — The Automobile Club of Great Britain stages a Thousand Mile Trial, a reliability motor rally over a circular route from London to Edinburgh and return.
May — The Migdale Hoard of early Bronze Age jewellery is discovered near Bonar Bridge.
September–November — Queen Victoria pays her last visit to Balmoral Castle.
31 October — The United Free Church of Scotland is formed by union of the United Presbyterian Church of Scotland and the Free Church of Scotland.
15 December — All three keepers of the Flannan Isles Lighthouse are drowned.
21 December — Delting disaster: four fishing boats with 22 crew from the Shetland villages of Mossbank and Firth (in the parish of Delting) are lost in a storm.
Charles Rennie Mackintosh designs the White Dining Room for Catherine Cranston's tearooms in Ingram Street, Glasgow.
14 March — Margaret Kidd, lawyer (died 1989)
29 May — David Maxwell Fyfe, 1st Earl of Kilmuir, lawyer and politician, Lord Chancellor (died 1967)
9 October — Alastair Sim, character actor on stage and screen (died 1976)
12 December — David Meiklejohn, international footballer (died 1959)
Margaret Sinclair, nun (died 1925)
15 May — Hercules Linton, shipbuilder (born 1837)
30 May — Francis Moncreiff, international rugby union player and Scotland's first captain (born 1849)
9 October — John Crichton-Stuart, 3rd Marquess of Bute, landowner (born 1847)
Doric dialect poet Charles Murray publishes Hamewith, including "The Whistle".
1900 in Scotland Wikipedia
Events from the year 1900 in Scotland.