Sudeley Castle is a Grade I listed castle in the parish of Sudeley, in the Cotswolds, near to the medieval market town of Winchcombe, Gloucestershire, England. The castle has 10 notable gardens covering some 15 acres (6.1 ha) within a 1,200-acre (490 ha) estate nestled within the Cotswold hills.

The Cotswolds is a region of central South West England, along a range of rolling hills that rise from the meadows of the upper River Thames to an escarpment above the Severn Valley and the Vale of Evesham. The area is defined by the bedrock of Jurassic limestone that creates a type of grassland habitat that is quarried for the golden-coloured Cotswold stone. The predominantly rural landscape contains stone-built villages, towns, stately homes and gardens featuring the local stone.