Rosmalen Grass Court Championships

The Rosmalen Grass Court Championships, from 2016 on also known by its sponsored name "Ricoh Open", is a professional tennis tournament held in Rosmalen, 's-Hertogenbosch (Den Bosch), the Netherlands. The men's and women's tennis matches are played on outdoors grass courts at the Autotron convention center, and constitute a stage on the ATP Tour and the WTA Tour.

In 1989 a two-group round robin invitational tournament with eight players was organized in Rosmalen which was won by Miloslav Mečíř. The next year, 1990, the tournament became part of the newly founded ATP Tour and was officially called the Continental Grass Court Championships. At the time of its founding it was the only grass court tournament in continental Europe. The tournament is a preparation event for the Wimbledon Championships and was held the week prior to Wimbledon until 2014. From 2015 onwards it is held the week following the French Open. In 1996 a women's singles and doubles event dubbed Wilkinson Championships was added to the tournament.

The men's tournament is currently part of the ATP World Tour 250 and the women's tournament is part of the WTA International Tournaments series. In the past it was also known by previously sponsored names Heineken Trophy, Ordina Open, UNICEF Open and Topshelf Open.