Denis Istomin was the men's singles defending champion at the 2016 Nottingham Open, but lost in the first round to Damir Džumhur.
Steve Johnson won the title, defeating Pablo Cuevas in the final, 7–6(7–5), 7–5. It was his first ATP Tour singles title.
Seeds All seeds receive a bye into the second round.
Draw
Finals
Top half
Section 1
Section 2
Bottom half
Section 3
Section 4
Qualifying
Seeds
Qualifiers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links Main draw Qualifying draw