| Birth Place: | Jurilovca, Romania[1] |
| Height: | 170 cm |
| Weight: | 63 kg |
| Sport: | Canoe sprint |
| Club: | Danubiu Tulcea CS Dinamo București[2] |
| Show-Medals: | yes |
Maria Ştefan (later Mihoreanu, and Cosma, born 16 February 1954) is a retired Romanian canoe sprinter who competed at the 1976, 1980 and 1984 Olympics. She won a gold medal in the K-4 500 m event in 1984 and placed fourth-fifth in the singles in 1976 and 1980.[1] She won three bronze medals at the ICF Canoe Sprint World Championships, one each in the K-1 500 m (1983), the K-2 500 m (1981), and the K-4 500 m (1983) events.[2] Her sister-in-law Maria Nichiforov is also a former Olympic canoer.[1]