how many countries participated in the bandung conference?

Twenty-nine countries participated in the Bandung Conference in 1955.

Since you asked this in a “Quick Scoop” style, here’s a compact context add‑on:

• The Bandung Conference was held in April 1955 in Bandung, Indonesia, bringing together newly independent or still‑struggling Asian and African states.

• All 29 participating countries together represented more than half of the world’s population at the time, which is one reason the conference is often seen as a milestone in the emergence of the Global South.

TL;DR: 29 countries took part in the Bandung Conference. Information gathered from public forums or data available on the internet and portrayed here.