Pieter de Keyser (c.1595 – 15 September 1676 (buried)) was a Dutch Golden Age architect (bouwmeester) and sculptor.
He was commissioned by his father to oversee the construction of the Huis Bartolotti house on the Herengracht canal in Amsterdam in c.
[citation needed] After his father's death in 1621, he succeeded him as Amsterdam's master mason (stadssteenhouwer) and oversaw the completion of the Westerkerk and Noorderkerk churches, as well as the Huis met de Hoofden house on Keizersgracht canal.
In addition, he finished two other uncompleted projects of his father's: a mausoleum for William the Silent in the Nieuwe Kerk in Delft as well as a statue of Erasmus in Rotterdam.
The Accijnshuis (1637) building in Amsterdam is usually attributed to Jacob van Campen but could also have been designed by Pieter de Keyser.