Some 11 outlets would be replaced by "outreach" operations which would see them become a mobile post office, or based in a shop, cafe or other business. Another option would see a telephone service provide facilities such as parcel collection.
The public has been asked for their views on the plans, which leaves 180 Highland branches open.Highland MSPs offered their support to communities wanting to fight the proposals.
Proposals to axe 44 postal offices in Glasgow, Argyll and Central Scotland have already been unveiled. Plans for other parts of Scotland will be announced later in 2008.
Up to 2,500 post offices will be axed across the UK, to put the network on a more viable footing. The Highland proposals are open for consultation until 18 February.
Proposed branch closures: Inverness, Nairn, Badenoch and Strathspey - Harbour Street, Kingsmills Road, Abriachan.
Caithness, Sutherland and Easter Ross - Spittal, Barrock, Pultneytown, Saltburn.
Ross, Skye and Lochaber - Breakish, Contin, Duncanstown, Earlish, Killearnan, Maryburgh, Onich, Rosemarkie, Treslaig, Waternish, West End Dingwall.
Proposed "outreach" services: Kirkhill, Kessock, Edderton, Kildary, Cawdor, Croy, Ardersier, Farr, Latheron, Mid Clyth, Canisbay.