Fleckney is a village and civil parish in the Harborough district of Leicestershire, England. It is situated 2.5 miles (4 km) west of the A6 national route between Market Harborough and Leicester.

The village appeared in the Domesday Book and remained a small farming community until the 19th century, which saw development of industry: initially bricks and later hosiery. The historic village centre is a hub of amenities for the mostly rural local area.

Mentioned as Flechenie in the Domesday Book as the location of just three households, the old factory buildings at the edge of the village are the remains of the 19th century brickworks and later hosiery factories. Decorative bricks in the Barlow shed of St Pancras railway station were produced in Fleckney. After the Second World War, successive developments of new housing were constructed radiating north and south from the historic village centre towards the parish boundaries. Due to severe storms in 2012, the village church suffered roof damage. This was repaired with the donation of a semi-retired local builder, among others.

The village occupies a generally flat area among gently rolling hills in Leicestershire. The Grand Union Canal traverses the eastern edge of the parish from north to south via the Kibworth Locks and the Saddington tunnel.

In the parish, a few hundred metres east of the village is Mill Field Wood also known as Millennium Wood, planted in 2000 as a millennium project. The 18.9 acres (7.6 ha) were bought by the Woodland Trust and villagers of Fleckney and those surrounded planted its trees. The bulk of trees planted were oak, ash, silver birch and field maple; shrubs planted were chiefly hazel and blackthorn, diverse native species.

The pond in the centre of the village has many ducks and was originally a clay or brickearth pit, a relic of 19th brickmaking. The pond drains in to Fleckney Brook, a tributary of the River Sence which by way of the rivers Soar, Trent and estuarine Humber (noted for Hull) runs relatively directly in to the North Sea. Despite the sea at The Wash being 56 miles (90 km) away, these thus run from here more than 100 miles (160 km) to reach the cusp of the estuary at Cleethorpes.

To the east is the slightly larger village of Kibworth and adjoining Smeeton Westerby; to the south and separated by a narrow tract of agricultural land is the hilltop village of Saddington; while to the north and east are the parishes of Newton Harcourt, Kilby, Wistow and Arnesby.