The Irish Grand Prix also known Irish International Grand Prix was an open-wheel racing car motor race which was held three times on a 4.25 mile circuit laid out in the grounds of Phoenix Park in Dublin.

The first year of the event was 1929 when Boris Ivanowski, a former imperial officer in the Russian army was dominant, racing and winning both the Saorstát Cup and Éireann Cup races driving an Alfa Romeo to claim the inaugural Irish Grand Prix.

In the Saorstát Cup race his victory margin was over a minute ahead of Sammy Davis (Lea-Francis), finishing in a time of 3h:41m:30s.

In the Éireann Cup race it was a much closer battle between Ivanowski's Alfa Romeo and England's Glen Kidston (Bentley), with the Russian completing the 300 mile race distance in a time of 3h:40m:54s, only 14 seconds ahead of Kidston in second place, followed by Henry Birkin (Bentley) in third.

In 1930 Germany's Rudolf Caracciola dominated in the Éireann Cup race to claim the Irish Grand Prix for Mercedes.