2018 Gimcheon Open ATP Challenger – Doubles
# 2018 Gimcheon Open ATP Challenger – Doubles

Marco Chiudinelli and Teymuraz Gabashvili were the defending champions but chose not to defend their title.

Ruan Roelofse and John-Patrick Smith won the title after defeating Sanchai and Sonchat Ratiwatana 6–2, 6–3 in the final.

## Seeds

* Ruan Roelofse / John-Patrick Smith (champions)
* Aliaksandr Bury / Peng Hsien-yin (semifinals)
* Sanchai Ratiwatana / Sonchat Ratiwatana (final)
* Hsieh Cheng-peng / Christopher Rungkat (quarterfinals)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | R Roelofse J-P Smith | $7^7$ | 7 | | | | | | | | | | | | | | |
| | M Gong Y Uchiyama | $6^5$ | 5 | | 1 | R Roelofse J-P Smith | 6 | 6 | | | | | | | | | |
| WC | Kim Yu-seob Lim Hyung-chan | $6^5$ | 3 | | | D Wu Ze Zhang | 2 | 3 | | | | | | | | | |
| | D Wu Ze Zhang | $7^7$ | 6 | | | | | | 1 | R Roelofse J-P Smith | w/o | | | | | | |
| 4 | C-p Hsieh C Rungkat | 6 | $7^7$ | | | | | | | F Nielsen V Pospisil | | | | | | | |
| Q | Renta Tokuda W Trongcharoenchaikul | 2 | $6^3$ | | 4 | C-p Hsieh C Rungkat | 3 | 3 | | | | | | | | | |
| | B Klein B Schnur | 2 | 5 | | | F Nielsen V Pospisil | 6 | 6 | | | | | | | | | |
| | F Nielsen V Pospisil | 6 | 7 | | | | | | | | | | | 1 | R Roelofse J-P Smith | 6 | 6 |
| WC | Lim Min-seob Yoon Il-sang | 3 | 3 | | | | | | | | | | | 3 | Sa Ratiwatana So Ratiwatana | 2 | 3 |
| | M Purcell L Saville | 6 | 6 | | | M Purcell L Saville | 1 | 4 | | | | | | | | | |
| | T Chen C-h Yi | 1 | 6 | [8] | 3 | Sa Ratiwatana So Ratiwatana | 6 | 6 | | | | | | | | | |
| 3 | Sa Ratiwatana So Ratiwatana | 6 | 4 | [10] | | | | | 3 | Sa Ratiwatana So Ratiwatana | 3 | 6 | [10] | | | | |
| WC | Choi Jae-won Moon Ju-hae | 2 | 3 | | | | | | 2 | A Bury H-y Peng | 6 | 3 | [4] | | | | |
| | R Gonzales J Jung | 6 | 6 | | | R Gonzales J Jung | 2 | 2 | | | | | | | | | |
| | T Matsui M McDonald | 5 | 1 | | 2 | A Bury H-y Peng | 6 | 6 | | | | | | | | | |
| 2 | A Bury H-y Peng | 7 | 6 | | | | | | | | | | | | | | |
