A trident.

It is the emblem of the city of Bologna, Italy, where it is located. According to legend, it is the weapon in the hands of Poseidon Napqiu in Greek mythology. It shows the immense power of Poseidon.

The trademark means that the "Maserati" brand car is like the roaring and surging of the vast sea, which is a metaphor for the fast running potential of Maserati cars.