2023 Dubai Tennis Championships – Men's singles

Daniil Medvedev defeated the defending champion Andrey Rublev in the final, 6–2, 6–2 to win the men's singles tennis title at the 2023 Dubai Tennis Championships. It was Medvedev's third ATP Tour title in as many weeks, following championships in Rotterdam and Doha. He did not drop a single set en route to the title.

Novak Djokovic and Carlos Alcaraz were in contention for the world No. 1 singles ranking. Djokovic retained the top ranking after Alcaraz withdrew from Acapulco sidelined due to injury sustained in Rio the previous week. Medvedev ended Djokovic's 21-match winning streak in the semifinals which dated back to 2022 ATP Finals.

This tournament marked the retirement of former top-50 player Malek Jaziri. He lost in the first round to Alejandro Davidovich Fokina.

Seeds
• # 🇷🇸 Novak Djokovic (semifinals)

• # Andrey Rublev (final)

• # Daniil Medvedev (champion)

• # 🇨🇦 Félix Auger-Aliassime (second round)

• # 🇵🇱 Hubert Hurkacz (quarterfinals)

• # Karen Khachanov (first round)

• # 🇩🇪 Alexander Zverev (semifinals)

• # Borna Ćorić (quarterfinals)

Seeds
• # 🇫🇷 Quentin Halys (qualifying competition, lucky loser)

• # 🇭🇺 Márton Fucsovics (first round)

• # Ilya Ivashka (first round)

• # 🇨🇳 Zhang Zhizhen (first round)

• # 🇦🇺 Christopher O'Connell (qualified)

• # Roman Safiullin (first round)

• # 🇮🇹 Francesco Passaro (qualifying competition, lucky loser)

• # 🇮🇹 Matteo Arnaldi (qualifying competition, lucky loser)

Qualifiers
• # 🇦🇺 Christopher O'Connell

• # 🇨🇿 Tomáš Macháč

• # Pavel Kotov

• # 🇧🇬 Alexandar Lazarov

Lucky losers
• # 🇫🇷 Quentin Halys

• # 🇮🇹 Matteo Arnaldi

• # 🇮🇹 Francesco Passaro

• # Alexander Shevchenko