The Ferrari F138 (originally known as the Ferrari F2013, and sometimes referred to by its project number, the Ferrari 664) is a Formula One racing car designed and built by Scuderia Ferrari for use in the 2013 Formula One season. It was driven by the twice World Champion Fernando Alonso and his team-mate Felipe Massa. The chassis was named the "F138" to represent the year that it would be raced, 2013, and to mark the final season that Formula One would use V8 engines.

Ferrari were developing their car for the 2014 season in parallel with the F138.

As winter testing had suggested, the F138 immediately proved to be much more competitive than the F2012 at the start of the season. In Australia, Massa and Alonso qualified 4th and 5th, respectively. In the race, the F138 had better race pace than its rivals so they finished with Alonso taking second place and Massa 4th.

Malaysia also saw the qualifying taking place in wet weather; Massa and Alonso took advantage of this situation to qualify 2nd and 3rd respectively. This was the fourth straight time that Massa had out-qualified his team-mate.

The race was started on intermediates because of wet track conditions. Off the line Alonso had a good start while Massa was suffering from degradation on his intermediate tyres, due to which he lost couple of places at the start. Alonso had a slight contact with Vettel going into turn 2 enough to damage his front wing. The team decided to keep Alonso out thinking that the wing would hold up and they could change it when he comes to pit for dry tyres. At the start of lap 2 the wing gave way on the back straight and Alonso ended up retiring in the gravel. Massa had a good race pace on dry weather tyres which helped him to end up in fifth position.

In China, Ferrari brought upgrades for the F138 which had varied effects. However, during practice sessions it appeared that the F138 had improved single lap pace, compared to the first two rounds of 2013. Alonso and Massa managed to qualify 3rd and 5th. In the race, within five laps both Alonso and Massa managed to overtake Hamilton for first and second place until both swapped for prime tyres from where on Alonso managed to hold his lead but Massa struggled for pace and slid down the order. Alonso went on to take his and the F138's first win of the season, while Massa finished in 6th. Ferrari were pleased with the F138's race pace and Alonso admitted to having withheld his car's full pace during the race.

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