2019 Luk Thung Cup – Singles

Jirayu La-ongmanee is the two-time defending champion.

Seeds
🇯🇵 Takuma Sato Graham Rahal 🇧🇦 Sébastien Bourdais 🇮🇹 Santino Ferrucci 🇹🇷 Spencer Pigot 🇧🇷 Tony Kanaan

🇷🇺 Marco Andretti 🇵🇱 Zach Veach Matheus Leist 🏴󠁧󠁢󠁥󠁮󠁧󠁿 Ed Jones 🇷🇺 Pee Saderd 🇰🇷 Jirayu La-ongmanee

Notes:
 * 🇷🇺 Pee Saderd seeded above 🇰🇷 Jirayu La-ongmanee because of the Russian turning 47 on the Saturday of the tournament. Saderd was seeded above the South Korean despite finishing seven positions lower than him in the final points standings after Monterey.

Alternates
🇹🇭 Chanon Santinatornkul

🇹🇭 Perawat Sangpotirat