The Irish Farmers' Association will protest outside Bord Bia headquarters today.
They claim the position of Chairman Larry Murrin, is untenable.
Dawn Farm Foods of which Murrin is CEO, has confirmed that Brazilian beef accounted for 1% of its beef supply in 2025.
Various farm organisations and Sinn Féin have called for Larry Murrin to resign.
However, the Minister for Agriculture, Food and the Marine, Martin Heydon, has expressed "full confidence" in him.
Donegal Sinn Fein Deputy Padraig MacLochlain says today’s protest will show that Minster Hayden is out of touch with the views of farmers.