This junction is north of Inverkeithing station and opened for the opening of the Forth Bridge. It forms the southern apex of a triangle of lines. The reverse curves travelled by a train following the main line betray that the original route here was from Dunfermline to Queensferry.
At this junction the line runs south to Inverkeithing (and on to the Forth Bridge) and to the north the lines to Dunfermline Town and Aberdour divide.
In the 'V' of the junction were minimal locomotive servicing facilities, without a shed building: a pit, coaling stage and water column.
The signal box here closed in 1979, being taken over by the Edinburgh Signalling Centre. The box was located in the 'V' of the junction. This was the second box at this location, the original being on the east side of the junction (this box closed in 1914 when a yard was laid out on the north west fork). There are several looped lines and dead end sidings approached from Inverkeithing North Junction. In recent years the yard has been used for coal loading. The box took over Inverkeithing South Junction in 1972.