Glayva is a liqueur produced in Leith, Scotland, by Whyte and Mackay Ltd. It is marketed with the slogan 'best liqueur in the world'.
Glayva is made from a blend of aged Scotch whiskies, a selected range of spices, Mediterranean tangerines, cinnamon, almonds and honey. It has a deep gold colour and a distinctive flavour.
Its name is an Anglicised spelling of Glè Mhath, which means 'very good' in Scottish Gaelic.