The Arrows A19 was the car with which the Arrows Formula One team competed in the 1998 Formula One World Championship. It was driven by Brazilian Pedro Diniz, who was in his second season with the team, and Finn Mika Salo, who had moved from Tyrrell to replace Jordan-bound Damon Hill.

The A19 proved to be quite unreliable throughout the season, particularly in the first few Grands Prix, culminating in an embarrassing simultaneous engine failure at the 1998 Spanish Grand Prix. However, the next race at Monaco proved the effectiveness of the chassis: on a circuit where engine power is not so vital, the cars were competitive and scored a double-points finish. Thereafter, the cars were too slow and unreliable to be serious contenders, although Diniz salvaged fifth place at the chaotic 1998 Belgian Grand Prix. During the same weekend, Salo destroyed his car during the Saturday practice session at Eau Rouge and wrote off another chassis in the multi-car pile-up at the start of the race.

The team eventually finished a respectable seventh in the Constructors' Championship, with six points.