Hartwig Gauder (born 10 November 1954 in Vaihingen an der Enz) is a former German race walker.
Born in West Germany, his family moved to East Germany in 1960 when they inherited property at Ilmenau.
Gauder thus competed for East Germany.In 1996 Gauder started suffering from a virus infection of his heart.
After living with an artificial heart for several months, he received a heart transplant.
He has subsequently taken part in the New York Marathon several times.
Being classified as a disabled participants due to his transplant, he was once disqualified for being too fast as there was a minimum time, which he underran.His recovery from almost dying to returning into a normal life was covered in a documentary shown on German documentary channel Phoenix.