Marin Čilić defeated Novak Djokovic in the final, 5–7, 7–6(7–4), 6–3 to win the singles tennis title at the 2018 Queen's Club Championships. He saved a championship point in the second set. This was Djokovic's first ATP Tour final in almost a year, and Čilić's second victory over Djokovic in their 16 matches played.
Feliciano López was the defending champion, but lost in the quarterfinals to Nick Kyrgios.
Seeds
Draw
Finals
Top half
Bottom half
Qualifying
Seeds
Qualifiers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
Main draw Qualifying draw