Most people singing a national/regional anthem simultaneously
Who
Ministry of Cultural Affairs, Government of the Peoples' Republic of Bangladesh
What
254537 people
Where
Bangladesh Dhaka,National Parade Ground
When
The most people singing a national anthem simultaneously is 254,537 and was achieved by the Ministry of Cultural Affairs, Government of the Peoples' Republic of Bangladesh (Bangladesh) at the National Parade Ground in Dhaka, Bangladesh, on 26 March 2014.