Adrian Mannarino defeated Jordan Thompson in the final, 7–6(9–7), 6–3 to win the men's singles tennis title at the 2019 Rosmalen Grass Court Championships. It was Mannarino's maiden ATP Tour singles title in his seventh final. Thompson was also contesting for his maiden title.
Richard Gasquet was the defending champion, but lost to Thompson in the semifinals.
Seeds The top four seeds receive a bye into the second round.
Draw
Finals
Top half
Bottom half
Qualifying
Seeds
Qualifiers
Lucky loser Thomas Fabbiano
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
Main Draw Qualifying Draw