The 1989 Yugoslavian motorcycle Grand Prix was the eighth round of the 1989 Grand Prix motorcycle racing season.

It took place on the weekend of 9–11 June 1989 at the Automotodrom Grobnik circuit, near Rijeka.

Another pole for Kevin Schwantz, but Wayne Rainey gets a little gap after the light, and is chased by Eddie Lawson, Schwantz, Kevin Magee and Pierfrancesco Chili.

Lawson takes the lead, but makes a mistake and goes off-track, letting Schwantz and Rainey through and getting dropped from the leading group, though remaining in the third place.

Schwantz wins it ahead of Rainey and Lawson, and Rainey pulls ahead slightly in the standings.