Piet Blom (February 8, 1934, Amsterdam - June 8, 1999, Denmark) was a Dutch architect best known for his Cube House (Kubuswoningen) built in Helmond in the mid-1970s and in Rotterdam in the early 1980s. He studied at the Amsterdam Academy of Building-Arts as a student of Aldo van Eyck.

Piet was selected as the Prix de Rome recipient in 1962.

Piet Blom, Aldo van Eyck, Herman Hertzberger a.o. are representatives of the movement Structuralism.

There is a Museum dedicated to Piet BLom's works set to open in May 2013 in Hengelo, The Netherlands