The Fiat 507 is a passenger car produced by Italian automobile manufacturer Fiat between 1926 and 1927. The car was developed from 505 with modified suspension and brakes.

Body styles available where a 4-door sedan and a 4-door cabriolet. Both of these were front-wheel drive. The engine fitted was a straight-4 unit with a displacemenr of 2296cc and a power output of 35 hp. The engine was mated to a 4-speed manual gearbox.

A total number of 3700 cars were produced.