Diomande or Diomandé is a surname. Notable people with the surname include:
Adama Diomande (born 1990), Norwegian footballer Aïchata Diomande (born 1984), Ivorian women's basketball player Ismaël Diomandé (born 1992), Ivorian footballer Ismaël Diomandé (born 2003), Ivorian footballer Lassina Diomandé (born 1979), Ivorian footballer Mé Aboubacar Diomandé (born 1988), Ivorian footballer Mohamed Diomande (born 2001), Ivorian footballer Olivier Diomandé (born 1974), French-born Ivorian rugby union player Ousmane Diomande (born 2003), Ivorian footballer Souleymane Diomandé (born 1992), Ivorian footballer Vamouti Diomande (born 1991), Ivorian footballer Yan Diomande (born 2006), Ivorian footballer