Diack

Diack is a surname. Notable people with the surname include:


 * Lamine Diack (1933–2021), Senegalese businessman, sports administrator, and former athlete
 * Robbie Diack (born 1985), South African-born Irish rugby union player
 * Tuppy Diack (born 1930), Former New Zealand All Black, NZ Universities rugby player, Otago and Southland provincial rugby player.