The Fiat 1100 is a small family car produced from 1953 until 1969 by the Italian manufacturer Fiat. It was an all-new unibody replacement for the Fiat 1100 E, which descended from the pre-war, body-on-frame Fiat 508 C Balilla 1100. The 1100 was changed steadily and gradually until being replaced by the new Fiat 128 in 1969. There were also a series of light commercial versions of the 1100 built, with later models called the Fiat 1100T, which remained in production until 1971. The Fiat 1100 D also found a long life in India, where Premier Automobiles continued to build the car until the end of 2000.

Fiat Automobiles S.p.A. is an Italian automobile manufacturer, formerly part of Fiat Chrysler Automobiles, and since 2021 a subsidiary of Stellantis through its Italian division Stellantis Europe. Fiat Automobiles was formed in January 2007 when Fiat S.p.A. reorganized its automobile business, and traces its history back to 1899, when the first Fiat automobile, the Fiat 4 HP, was produced.