| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Female | 
| Full name | Márta•Tolnai-Erdős (Szotáczky-) | 
| Used name | Márta•Tolnai-Erdős | 
| Born | 23 August 1941 in Pécs, Baranya (HUN) | 
| Died | 5 July 2012 in Pécs, Baranya (HUN) | 
| Measurements | 162 cm / 55 kg | 
| Affiliations | Pécsi VSK, Pécs (HUN) | 
| NOC |  Hungary | 
Márta Tolnai-Erdös began her sporting career with her twin sister at PVSK (Pécsi Vasutas Sportkör). Between 1961 and 1969 Márta was a member of the Hungarian national squad, participating at two Olympics, in 1964 and 1968. She also won a gold medal in the team competition at the 1965 Universiade. Between 1971 and 1984, Tolnai-Erdös worked as a trainer at PVSK and PMSC.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1964 Summer Olympics | Artistic Gymnastics (Gymnastics) |  HUN | Márta Tolnai-Erdős | |||
| Individual All-Around, Women (Olympic) | 32 | |||||
| Team All-Around, Women (Olympic) | Hungary | 5 | ||||
| Floor Exercise, Women (Olympic) | =40 r1/2 | |||||
| Horse Vault, Women (Olympic) | 21 r1/2 | |||||
| Uneven Bars, Women (Olympic) | 36 r1/2 | |||||
| Balance Beam, Women (Olympic) | 34 r1/2 | |||||
| 1968 Summer Olympics | Artistic Gymnastics (Gymnastics) |  HUN | Márta Tolnai-Erdős | |||
| Individual All-Around, Women (Olympic) | =35 | |||||
| Team All-Around, Women (Olympic) | Hungary | 5 | ||||
| Floor Exercise, Women (Olympic) | =33 r1/2 | |||||
| Horse Vault, Women (Olympic) | =31 r1/2 | |||||
| Uneven Bars, Women (Olympic) | =55 r1/2 | |||||
| Balance Beam, Women (Olympic) | =30 r1/2 |