 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Female | 
| Full name | Alexandra "Sandra"•Hartley (-O'Brien Cousins) | 
| Used name | Sandra•Hartley | 
| Born | 23 June 1948 in Vancouver, British Columbia (CAN) | 
| Measurements | 165 cm / 56 kg | 
| Affiliations | UBC Thunderbirds, Vancouver (CAN) | 
| NOC |  Canada | 
Sandra Hartley was a member of the silver medal winning team at the 1967 Pan American Games.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1968 Summer Olympics | Artistic Gymnastics (Gymnastics) |  CAN | Sandra Hartley | |||
| Individual All-Around, Women (Olympic) | =62 | |||||
| Team All-Around, Women (Olympic) | Canada | 11 | ||||
| Floor Exercise, Women (Olympic) | =49 r1/2 | |||||
| Horse Vault, Women (Olympic) | =60 r1/2 | |||||
| Uneven Bars, Women (Olympic) | 81 r1/2 | |||||
| Balance Beam, Women (Olympic) | 40 r1/2 |