| Fritz Grau | |
| Nationality: | German |
| Sport: | Bobsleigh |
| Birth Date: | 8 November 1894 |
| Birth Place: | Friedrichshagen, German Empire |
| Death Place: | Poznań, Poland |
Fritz Grau (8 November 1894 - 5 July 1945) was a German bobsledder who competed in the 1930s. He won two bronze medals at the FIBT World Championships (two-man: 1933, four-man: 1930). Grau was seriously injured, along with teammates Albert Brehme and Helmut Hopnaann, shortly before the 1932 Winter Olympics. He also finished sixth in the two-man event at the 1936 Winter Olympics in Garmisch-Partenkirchen.