Kirknewton is a village formerly in the county of Midlothian and, since 1975, in West Lothian, Scotland. The population of the Kirknewton Community Council district is 2200, which includes the village and surrounding areas. It lies south of the A71 from Edinburgh to Livingston, and north of the A70, the high-level road that runs along the north side of the Pentland Hills from Edinburgh to Carnwath and Lanark. Much of the village stands back from the B7031, which links the two main "A" roads. To the south-east of the village is Morton.

Midlothian is a historic county, registration county, lieutenancy area and one of 32 council areas of Scotland used for local government. Midlothian lies in the east-central Lowlands, bordering the City of Edinburgh council area, East Lothian and the Scottish Borders.