2019 City of Playford Tennis International – Men's singles

Jason Kubler was the defending champion but chose not to defend his title.

Rogério Dutra Silva won the title after defeating Mats Moraing 6–3, 6–2 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇮🇹 Lorenzo Sonego (quarterfinals)

• # 🇳🇴 Casper Ruud (quarterfinals)

• # Lloyd Harris (quarterfinals, retired)

• # 🇪🇸 Adrián Menéndez Maceiras (second round)

• # 🇮🇹 Stefano Travaglia (second round)

• # 🇫🇷 Corentin Moutet (second round)

• # 🇯🇵 Tatsuma Ito (second round)

• # 🇩🇪 Mats Moraing (final)

• # 🇫🇷 Constant Lestienne (semifinals)

• # 🇧🇷 Rogério Dutra Silva (champion)

• # 🇩🇪 Dominik Köpfer (third round)

• # 🇰🇿 Alexander Bublik (second round)

• # 🇩🇪 Oscar Otte (third round)

• # 🇮🇹 Luca Vanni (third round)

• # Henri Laaksonen (third round)

• # 🇷🇸 Peđa Krstin (second round)