Iran and Iraq do not have a scheduled match against each other in the 2026 World Cup based on the current schedule coverage I found; Iraq’s listed match is against Senegal, not Iran.

What this means

The World Cup schedule currently shows Iraq in a different fixture, while Iran is not shown as playing Iraq in the tournament listings I found.

So there does not appear to be a “next match” between Iran and Iraq in World Cup 2026.

Quick note

If you meant their next overall international match outside the World Cup, I’d need the latest team fixtures to answer that accurately.