Gloucester Cathedral, formally the Cathedral Church of St Peter and the Holy and Indivisible Trinity, in Gloucester, England, stands in the north of the city near the River Severn. It originated with the establishment of a minster, Gloucester Abbey, dedicated to Saint Peter and founded by Osric, King of the Hwicce, in around 679. The subsequent history of the church is complex; Osric's foundation came under the control of the Benedictine Order at the beginning of the 11th century and in around 1058, Ealdred, Bishop of Worcester, established a new abbey "a little further from the place where it had stood". The abbey appears not to have been an initial success, by 1072, the number of attendant monks had reduced to two. The present building was begun by Abbott Serlo in about 1089, following a major fire the previous year.

Gloucester is a cathedral city and the county town of Gloucestershire in the South West of England. Gloucester lies on the River Severn, between the Cotswolds to the east and the Forest of Dean to the west; it is sited 19 miles (31 km) east of Monmouth and 17 miles (27 km) east of the border with Wales. Gloucester has a population of around 132,000, including suburban areas. It is a port, linked via the Gloucester and Sharpness Canal to the Severn Estuary.