George "Jiri" Peternousek (born March 11, 1947 in Prague, Czechoslovakia) is a former professional ice hockey player. A naturalised Dutch citizen, he competed for the Netherlands national ice hockey team at both the 1980 Winter Olympics and the 1981 World Ice Hockey Championships.
A defenceman, Peternousek scored a goal and two assists in all 5 of Holland's games in Lake Placid. He had two assists in 8 games at the World Championships the following year.
Peternousek played seven years with Dutch club Tilburg Trappers.