2018 Bangkok Challenger II

Country	Player	Rank1	Seed
ESP	Marcel Granollers	177	1
ESP	Enrique López Pérez	256	2
ESP	Pedro Martínez	261	3
TPE	Yang Tsung-hua	265	4
RUS	Ivan Nedelko	273	5
GER	Mats Moraing	274	6
JPN	Yusuke Takahashi	282	7
ITA	Matteo Viola	285	8

• ¹ Rankings are as of 1 January 2018.^[1]

The following players received wildcards into the singles main draw:

• Thanapet Chanta
• Congsup Congcar
• Pruchya Isaro
• Pol Wattanakul

The following player received entry into the singles main draw using a protected ranking:

• Flavio Cipolla

The following players received entry from the qualifying draw:

• Yuya Kibi
• Frederik Nielsen
• Sidharth Rawat
• Emil Ruusuvuori

• Marcel Granollers def. Enrique López Pérez 4–6, 6–2, 6–0.

• James Cerretani / Joe Salisbury def. Enrique López Pérez / Pedro Martínez 6–7^(5–7), 6–3, [10–8].