Yichüaak Büalam was a Maya king of Seibal.
In AD 735 Uchaüan Küin Büalam - the fourth king of Dos Pilas kingdom - attacked Seibal, capturing Yichüaak Büalam. The captive king was not executed but rather became a vassal of his more powerful neighbour. Yichüaak Büalam is shown under the feet of Uchaüan Küin Büalam on Aguateca Stela 2.
Yichüaak Büalam continued as a vassal under the next king of Dos Pilas, Küawiil Chan Küinich, who presided over rituals at Seibal in 745 and 747.