The A836 road runs through Highland, Scotland. It is 129 miles long.

It branches from the A9 near Tain and runs generally north through Bonar Bridge and Lairg, until Tongue. Between Lairg and Tongue the road is single track for 38 miles. At Tongue the road turns east, following the north coast, passing through Thurso, and eventually ending at John o' Groats, where it meets the A99.

Although the road starts in Ross and Cromarty and ends in Caithness, the majority of its length is in Sutherland.

Junctions

• From near Tain, south of the Dornoch Firth, the A9 runs:
  • north/northeast to Thurso and the A836 itself, and;
  • generally south to Tain, Inverness, Perth and Falkirk.
• From Bonar Bridge the A949 runs east to the A9 north of the Dornoch Firth.
• From Invershin the A837 runs east/northeast to Lochinver .
• From staggered junctions in Lairg () the A839 runs:
  • west to the A837 near Invercassley and;
  • east/southeast to the A9 near Golspie .
• About one mile north of Lairg the A838 runs northwest and north to Durness and then west to rejoin the A836 at Tongue.
• From Altnaharra () the B873 runs east to Dalvina Lodge and the B871 .
• From Tongue (NC594579) the A838 runs generally east to Durness and then south and southeast back to the A836 near Lairg.

At Tongue the road turns to run generally east.

• In Strathnaver (NC711577), about 3 miles short of Bettyhill (NC706619) the B871 runs south to Davina Lodge and then southeast to the A897 at Kinbrace .
• In Strath Halladale (NC898632), about one mile beyond Melvich (NC885642), the A897 runs south to Kinbrace and to the A9 at Helmsdale.
• In Thurso, west of the River Thurso, the road becomes the A9 and is there linked north by the A9 to Scrabster Harbour .
• From the A836/A9 in central Thurso (ND116683) the B874 leads generally south towards Halkirk.
• East of the River Thurso the road regains its own identity and is there linked south by the A9 to the A836 itself near Tain, and to Inverness, Perth and Falkirk.
• From Castletown (ND196678) the B876 runs southeast to the A99 near Wick.
• From Dunnet (ND221713) the B855 runs north to Easter Head.
• The road's length terminates in John o' Groats (ND380728), where it is linked south by the A99 to Wick and to the A9 at Latheron.