| Headercolor: | lightblue |
| Marjut Heinonen | |
| Residence: | Haapavesi, Finland |
| Birth Date: | 28 October 1976 |
| Birth Place: | Trollhättan, Sweden |
| Weight: | 770NaN0 |
| Sport: | Shooting |
| Event: | Skeet |
| Club: | Haapaveden Ampumaseura |
| Coach: | Rauli Honka |
| Show-Medals: | yes |
Marjut Heinonen (born October 28, 1976, in Trollhättan, Sweden) is a Finnish sport shooter.[1] At age thirty-one, Heinonen made her official debut for the 2008 Summer Olympics in Beijing, where she competed in women's skeet shooting. She placed seventeenth in the qualifying rounds of the event, with a total score of 61 points.[2]
Heinonen currently resides in Haapavesi, Finland, where she trains full-time at Haapaveden Ampumaseura, under her personal coach Rauli Honka.