Marian Heffernan
| Personal information | |
|---|---|
| Born | 16 April 1982 |
| Height | 1.71 m (5 ft 7+1⁄2 in) |
| Weight | 63 kg (139 lb) |
| Sport | |
| Country | Ireland |
| Sport | Athletics |
| Event | 4 × 400m Relay |
Marian Heffernan (born 16 April 1982) is an Irish athlete who competed in the women's 4 × 400 metres relay at the 2012 Summer Olympics. Heffernan is fifth in the all-time Irish record books for the women's 400 metres.
She is married to Irish Olympic race walker Rob Heffernan, with whom she has a son, Cathal, who is a footballer.