2020 Adelaide International – Men's singles

Andrey Rublev defeated Lloyd Harris in the final, 6–3, 6–0, to win the men's singles tennis title at the 2020 Adelaide International. This was the first edition of the event.

Seeds
• #🇦🇺 Alex de Minaur (withdrew)

• #🇨🇦 Félix Auger-Aliassime (semifinals)

• #🇷🇺 Andrey Rublev (champion)

• #🇪🇸 Pablo Carreño Busta (quarterfinals)

• #🇺🇸 Taylor Fritz (first round)

• # Cristian Garín (first round)

• #🇩🇪 Jan-Lennard Struff (second round)

• #🇺🇸 Reilly Opelka (first round)

Seeds
• # 🇮🇹 Andreas Seppi (Accepted into Auckland main draw)

• # 🇦🇷 Federico Delbonis (qualified)

• # Nicolás Jarry (qualifying competition)

• # 🇫🇷 Grégoire Barrère (qualified)

• # 🇪🇸 Jaume Munar (qualifying competition; lucky loser)

• # 🇺🇸 Tommy Paul (qualified)

• # 🇮🇹 Salvatore Caruso (qualifying competition; lucky loser)

• # Lloyd Harris (qualified)

Qualifiers
• # Lloyd Harris

• # 🇦🇷 Federico Delbonis

• # 🇺🇸 Tommy Paul

• # 🇫🇷 Grégoire Barrère

Lucky losers
• # 🇪🇸 Jaume Munar

• # 🇮🇹 Salvatore Caruso

• # 🇫🇷 Stéphane Robert