Sue Costin
| Personal information | |
|---|---|
| Full name | Susan Angela Costin |
| Nationality | Australian |
| Born | 9 September 1944 Camperdown, Sydney, Australia |
| Sport | |
| Sport | Swimming |
| Coached by | Bruce McDonald |
Susan Angela Costin (born 9 September 1944) was an Australian professional swimmer who represented Australia during the 1962 British Empire and Commonwealth Games in the women's backstroke events.