The Plymouth Plaza was an automobile produced by the Plymouth division of the Chrysler Corporation from 1954 through the 1958 model year. The Plymouth Plaza had Plymouth's popular styling of the late 1950s, which is most recognized on the Plymouth Fury (of 1958).

The Plaza was Plymouth's entry-level car during those years and was priced under the Plymouth Savoy. The Plaza was sold only in two, three and four-door sedan variants. There are three body styles that the '58 Plaza was offered in. Known as Plymouth's "Price Leader", in 1958 the Plaza offered buyers the widest choice of options to date. Options formerly reserved only for higher priced lines were available on the Plaza for the first time in history. The Business Coupe, which was the least produced model of Plymouth in 1958 (1,472 units), differed from the regular 2dr Club Sedan in that the rear seat was an optional accessory. Plymouth also added a special edition to the Plaza fleet in '58. Based on a Plaza Club Sedan, the "Silver Special" had a custom paint job with silver paint on the roof and in the Sportone inserts plus a short stainless steel spear that accented the front fenders and extended partially into the front doors. The final custom touch was on the rear fins where the Silver Special bore "Forward Look" emblems instead of the traditional "Plaza" scripts. It is isn't known how many of the 94,728 Plazas produced in 1958 were fitted with the Silver Special trim package, but they are believed to be very rare cars.

In 1959, Plymouth discontinued the Plaza, replacing it with the Savoy.