Branston and Mere is a civil parish in the North Kesteven district of Lincolnshire, England. It is situated some 4 miles (6 km) roughly south-east from the city and county town of Lincoln.
The parish is a long strip between the RAF airfield at Waddington and the River Witham near Bardney. The A15 road crosses the extreme west and the parish is bisected by the Sleaford to Lincoln railway line
In the 2001 Census the population of the parish (including Branston Booths) was recorded as 4019 in 1693 households, increasing to 4,095 in 1,823 households at the 2011 census.
The civil parish was created in 1931, by merging the two former parishes of Branston and Mere.
The parish (Branston and Mere) meets Heighington and Canwick around 330 yards (300 m) north of the school, towards Heighington. The parish boundary with Heighington passes close to the edge of the east of the village, skirting the school's playing fields. The boundary follows Moor Lane, across the railway line along the road to Branston Booths where it meets the B1190 and Car Dyke, and along the Branston Delph on Branston Fen, crossing the River Witham, becoming the North Kesteven and West Lindsey boundary. The section north-east of the Witham is called Branston Island, meeting Fiskerton, Stainfield and Bardney, passing Bardney Lock. It meets Potter Hanworth at Bardney Bridge and follows Branston Causeway (becomes the B1190) westwards, skirting the north edge of Potterhanworth Booths. It follows the B1202 westwards for around a half mile, then skirts the southern edge of a wood, crosses the railway line and Little Gate Lane, then Sleaford Road (B1188).