Larne Harbour railway station, Larne, County Antrim, Northern Ireland, serves the ferry port for ferries to Cairnryan. There are also occasional sailings to Douglas, Isle of Man in conjunction with the Isle of Man TT. Sailings to Cairnryan are operated by conventional ships and several crossings a day operate in each direction throughout the year.

The station co-exists with the passenger terminus for P&O Ferries ferries offering simple integration for foot passengers. However, this situation is not mirrored at the Scottish terminus of Cairnryan, where the nearest railway station, Stranraer Harbour, is five miles from Cairnryan ferry terminal.

The station was opened on 1 October 1862. It was improved in 1890 by Berkeley Deane Wise to a budget of £3,000 (equivalent to £417,039 in 2023), with a double faced platform, one side serving the broad gauge line from Belfast and the other the narrow gauge from Ballymena, and a clock with two minute hands showing both English and Irish time, which was 25 minutes later.

This station is the final outbound terminus for services on the Larne Line.

Mondays to Saturdays there is an hourly service to Belfast Grand Central with extra services at peak times. Some of those peak services start and terminate at the nearby Larne Town station instead. During weekdays the first train leaves here at 6:05am and the last train arrives at 12:20am.

On Sundays the service to Belfast Grand Central reduces to operating every two hours.

Preceding station		Northern Ireland Railways		Following station
Larne Town		Northern Ireland Railways Belfast-Larne		Terminus
	Ferry services
Terminus		P&O Ferries Ferry		Stranraer Harbour (via bus link from Cairnryan)
	Historical railways
Larne Line re-aligned, station closed		Northern Counties Committee Belfast-Larne		Terminus
Larne Line and station closed		Ballymena and Larne Railway Ballymena-Larne		Terminus