Christopher Kempster (1627 – 1715) was an English master stonemason and architect who trained with Sir Christopher Wren, working on St Paul's Cathedral.^[1]

Kempster was from Burford in Oxfordshire, England. He sold Cotswold stone from his quarry at Upton, near Burford, to rebuild London after the Great Fire of London in 1666.^[2] He was also Christopher Wren's master mason during the rebuilding of St Paul's Cathedral in London. His County Hall, built 1678–82 in Abingdon, is now the Abingdon County Hall Museum.^[3]

The Kempster family quarry supplied stone for Blenheim Palace, Oxford colleges, and Windsor Castle.

His buildings, many with Sir Christopher Wren, include:

• Abingdon County Hall^[4]
• St James Garlickhythe, City of London (Kempster also made the font)
• St Mary Abchurch, City of London
• St Mary's Church, North Leigh^[5]
• St Stephen Walbrook, City of London
• Tom Tower, Christ Church, Oxford^[6]

John Perrott, Lord of the Manor, engaged Kempster to refit St Mary's Church, North Leigh, and to build a burial chapel for the Perrott family to the north of the north aisle.^[5] Kempster linked the Perrott chapel and the north aisle by an arcade of Tuscan columns.^[7]

St John the Baptist's Church in Burford has a memorial to Christopher Kempster.^[2][8]