| Birth Date: | 12 June 1960 |
| Birth Place: | Rotterdam, Netherlands |
| Strokes: | Backstroke |
Diane Hendrina Edelijn (born 12 June 1960) is a former backstroke swimmer from the Netherlands, who competed for her native country at the 1976 Summer Olympics in Montreal, Quebec, Canada. There, she finished in eighth position in the 100m backstroke, while she was eliminated in the third heat of the 200m backstroke. With the Dutch relay team, Edelijn ended up in fifth place in the 4 × 100 m medley, alongside Wijda Mazereeuw (breaststroke), José Damen (butterfly), and Enith Brigitha (freestyle).[1]