The 13th Rome Grand Prix was a non-championship Formula One motor race held on 6 June 1954 on a street circuit in Castelfusano park, Rome, Lazio.

The Grand Prix was won by Onofre Marimón in a Maserati 250F.

Marimón also took pole position and fastest lap.

[1][2] 1Mercedes-Benz had contracted Fangio to drive for them once their car was ready.

Until then he was allowed to drive for Maserati, but only in World Championship races.