Phineas P. Paist (August 28, 1873 – May 2, 1937)[1] was an American architect who was the supervising architect for the Coral Gables Corporation.

He attended Pennsylvania Academy of the Fine Arts.

[1] Paist was an architect working for S. Gifford Slocum at age 20.

In 1893 he became an associate of G. W. & W. D. Hewitt.

He later worked as an associate architect to Paul Chalfin in building the Villa Vizcaya in Florida.