The 2016 Ricoh Open was a tennis tournament played on outdoor grass courts. It was the 27th edition of the Rosmalen Grass Court Championships, and part of the 250 Series of the 2016 ATP World Tour, and of the WTA International tournaments of the 2016 WTA Tour. Both the men's and the women's events took place at the Autotron park in Rosmalen, 's-Hertogenbosch in the Netherlands, from 6 June through 12 June 2016. Nicolas Mahut and CoCo Vandeweghe won the singles titles.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| David Ferrer | 11 | 1 | ||
| Bernard Tomic | 22 | 2 | ||
| Ivo Karlović | 28 | 3 | ||
| Steve Johnson | 34 | 4 | ||
| Sam Querrey | 37 | 5 | ||
| Andreas Seppi | 38 | 6 | ||
| Gilles Müller | 42 | 7 | ||
| Nicolas Mahut | 44 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Pablo Carreño Busta →replaced by David Ferrer
Alexandr Dolgopolov →replaced by 
Rajeev Ram
Richard Gasquet →replaced by Ivan Dodig
David Goffin →replaced by Adrian Mannarino
Dudi Sela Fernando Verdasco →replaced by 
Horacio Zeballos| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 India | Rohan Bopanna | France | Nicolas Mahut | 13 | 1 | |
| Ivan Dodig | Rajeev Ram | 37 | 2 | |||
 United Kingdom | Dominic Inglot | Raven Klaasen | 45 | 3 | ||
 Canada | Daniel Nestor |  Pakistan | Aisam-ul-Haq Qureshi | 67 | 4 |
The following pairs received wildcards into the doubles main draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Belinda Bencic | 8 | 1 | ||
 Serbia | Jelena Janković | 26 | 2 | |
| France | Kristina Mladenovic | 30 | 3 | |
| Jeļena Ostapenko | 36 | 4 | ||
| Laura Siegemund | 37 | 5 | ||
| CoCo Vandeweghe | 43 | 6 | ||
| Canada | Eugenie Bouchard | 47 | 7 | |
| Anna-Lena Friedsam | 48 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Tímea Babos → replaced by Mirjana Lučić-Baroni Aleksandra Krunić
Camila Giorgi → replaced by Kateryna Kozlova
Anastasia Pavlyuchenkova → replaced by Polona Hercog
Barbora Strýcová → replaced by 
Yaroslava Shvedova| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Georgia | Oksana Kalashnikova | Kazakhstan | Yaroslava Shvedova | 54 | 1 | |
| Darija Jurak |  Australia | Anastasia Rodionova | 92 | 2 | ||
 Japan | Eri Hozumi | Japan | Miyu Kato | 129 | 3 | |
| Xenia Knoll | Serbia | Aleksandra Krunić | 139 | 4 |
See main article: 2016 Ricoh Open – Men's singles.
Nicolas Mahut def. 
Gilles Müller, 6–4, 6–4See main article: 2016 Ricoh Open – Women's singles.
CoCo Vandeweghe def. Kristina Mladenovic 7–5, 7–5See main article: 2016 Ricoh Open – Men's doubles.
Michael Venus def. Dominic Inglot / Raven Klaasen, 3–6, 6–3, [11–9]See main article: 2016 Ricoh Open – Women's doubles.
Oksana Kalashnikova / Yaroslava Shvedova def. Xenia Knoll / Aleksandra Krunić, 6–1, 6–1