Ullapool (/ˈʌləpuːl/; Scottish Gaelic: Ulapul [ˈul̪ˠapʰul̪ˠ]) is a village and port located in the civil parish of Lochbroom in the county of Ross and Cromarty, Scottish Highlands. It is located around 45 miles (70 kilometres) northwest of Inverness. According to the Scottish Government in 2016, the village had a population of 1,520 people, making it the largest settlement in Wester Ross.

Ullapool sits on a deep sea loch, Loch Broom, a significant natural harbour. As a result, Ullapool's port is regionally significant with ferries operated by Caledonian MacBrayne running from Ullapool to Stornoway on the Isle of Lewis. It also serves leisure craft, commercial fishing vessels and cruise ships.

The A835 road from Inverness to Durness passes through the village. This forms part of the scenic tourist route, the North Coast 500.

On the east shore of Loch Broom, Ullapool was founded in 1788 as a herring port by the British Fisheries Society. It was designed by Thomas Telford. Prior to 1788 the town was only an insignificant hamlet made up of just over 20 households. The harbour is used as a fishing port, yachting haven, and ferry port.

A road to link Ullapool with Dingwall was commenced in 1792. The village was historically in Cromartyshire, a county made up of many separate enclaves scattered across northern Ross-shire. Cromartyshire was abolished and combined with surrounding Ross-shire in 1890.

Ullapool has been described as the top geological hotspot in Scotland.

Parliament granted permission in the 1890s for a railway from Ullapool to the main Highland network at Garve railway station.

The name is possibly derived from the Norse word for "wool farm" or "Ulli's farm".