The 2009 IRB Nations Cup was the fourth edition of the international rugby union tournament, a competition created by the International Rugby Board.

It pits the "A" Teams of the stronger (Tier 1) rugby nations (France A, Italy A and Scotland A) against some of the Tier 2 and 3 nations (Romania, Russia and Uruguay).

[1] For the third consecutive year the event was held in Bucharest, Romania.

Emerging Springboks did not return to defend their title.

The competition was played over three match days, with three matches played consecutively on each day.