The 1998 Madrid motorcycle Grand Prix was the sixth round of the 1998 Grand Prix motorcycle racing season.

It took place on 14 June 1998 at the Circuito Permanente del Jarama.

It was held to replace the Portuguese Grand Prix due to homologation issues of the Autódromo do Estoril.

Below are the standings for the top five riders and constructors after round six has concluded.

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