Braai day must be scrapped because it serves "narrow white commercial interests", the Azanian Youth Organisation (AZAYO) said.
"This is largely perpetrated by the white section of the South African society which is opportunistically using this national day of importance as a braai day," it said in a statement.
It was further disappointed that other sections of society, like the black middle class, were "blindly" following the trend of celebrating Braai Day on National Heritage Day.
The organisation called on Arts and Culture Minister Lulu Xingwana to act against Braai Day, which "seeks to undermine the from country's heritage".
Head of the Braai4Heritage initiative Jan Scannell, also known as Jan Braai, was not immediately available for comment.
He was quoted on Thoughtleader.co.za as saying: "Braai4Heritage supports and encourages the celebration of the rich and diverse heritage of South Africa on 24 September each year. The traditional gathering place in Africa to celebrate is around the fire."
Braai Day was initiated by the Mzansi Braai Institute in South Africa in 2005 and has since 2008 been promoted under the Braai4Heritage banner.
In 2007 Archbishop Emeritus Desmond Tutu was appointed patron.
Tutu made a public appeal on braai4heritage.co.za to all South Africans to braai on September 24.
