| Ian Sinfield | |
| Nationality: | Australian |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 3 October 1934 |
| Birth Place: | London, England |
| Death Place: | Perth, Australia |
Ian Sinfield (3 October 1934 - 12 March 2010) was an Australian long-distance runner. He competed in the marathon at the 1960 Summer Olympics.[1]