See main article: 2015 ABN AMRO World Tennis Tournament.
Tomáš Berdych was the defending champion, but lost to Stan Wawrinka in the final, 6–4, 3–6, 4–6.
See also: 1. Andy Murray (quarterfinals)
See also: 2. Milos Raonic (semifinals)
See also: 3. Tomáš Berdych (final)
See also: 4. Stan Wawrinka (champion)
See also: 5. Grigor Dimitrov (second round)
See also: 6. Ernests Gulbis (first round)
See also: 7. Roberto Bautista Agut (second round)
See also: 8. Gilles Simon (semifinals)
See also: 1. Jan-Lennard Struff (first round)
See also: 2. Andrey Kuznetsov (qualified)
See also: 3. Andrey Golubev (first round)
See also: 4. Jürgen Melzer (qualifying competition)
See also: 5. Paul-Henri Mathieu (qualified)
See also: 6. Tobias Kamke (qualifying competition, lucky loser)
See also: 7. Marsel İlhan (first round)
See also: 8. James Ward (withdrew)