The match was played at SoFi Stadium, where neither side managed to find the back of the net.
Mehdi Taremi thought he had opened the scoring in the 25th minute, but his goal was disallowed for offside.
Belgium were reduced to 10 men in the 66th minute after Nathan Nguy was shown a straight red card for a foul on Taremi.
Despite efforts from both sides to break the deadlock, neither team managed to score, and the game ended in a 0–0 draw and Iran's hopes to remain in the tournament kept alive.
Iran goalkeeper Alireza Beiranvand was named Man of the Match after producing several crucial saves and delivering a standout performance between the posts.
With this result, Iran heads into its next group-stage match with confidence and strong hopes of progressing further in the tournament.
Iran had opened their World Cup campaign with a 2-2 draw against New Zealand and now face a crucial encounter against Egypt on June 27 as they look to keep their hopes of advancing to the knockout stage alive.
The 2026 tournament marks Iran's seventh appearance at the FIFA World Cup, underscoring the nation's continued presence on football's biggest stage.
MNA