See main article: 1991 Dutch Open (tennis).
Sergio Casal and Emilio Sánchez were the defending champions, but none competed this year. Sánchez opted to rest after winning at Stuttgart in the previous week, alongside Wally Masur.
Richard Krajicek and Jan Siemerink won the title by defeating Francisco Clavet and Magnus Gustafsson 7–5, 6–4 in the final.[1] [2]