Digna Ketelaar
Digna Ketelaar is a former Dutch tennis player. She won one ITF doubles title during her career and on 2 March 1987 reached a singles ranking high of world number 258. On 21 December 1986, Ketelaar reached a doubles ranking high of world number 174.
As a junior, Ketelaar became the 1984 French Open girls' doubles champion.
ITF doubles finals (1–2)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Winner | 1. | 28 April 1986 | Sutton, United Kingdom | Grass |  Susan Pendo |  Anneli Björk  Lone Vandborg | 7–6, 6–0 |
| Runner-up | 1. | 16 June 1986 | Fayetteville, United States | Hard |  Themis Zambrzycki |  Carin Bakkum Manon Bollegraf | 3–6, 6–7 |
| Runner-up | 2. | 17 November 1986 | Croydon, United Kingdom | Carpet | Simone Schilder |  Valda Lake Clare Wood | 6–7, 6–2, 5–7 |