This article is about the Dutch architect Pieter de Keyser. For the Dutch seafarer and astronomer, see Pieter Dirkszoon Keyser.
Pieter de Keyser (c.1595 – 15 September 1676 (buried)) was a Dutch Golden Age architect (bouwmeester) and sculptor. He followed in the footsteps of his father Hendrick de Keyser and completed a number of Hendrick de Keyser's buildings after his death in 1621.