| 2018 Lima Challenger | |
|---|---|
| Date | 22 October – 27 October |
| Edition | 12th |
| Surface | Clay |
| Location | Lima, Peru |
| Champions | |
| Singles | |
 Christian Garín | |
| Doubles | |
 Guido Andreozzi / Guillermo Durán | |
The 2018 Lima Challenger was a professional tennis tournament played on clay courts. It was the twelfth edition of the tournament, part of the 2018 ATP Challenger Tour. It took place in Lima, Peru between October 22 and October 27, 2018.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 URU
|
Pablo Cuevas | 66 | 1 |
| ARG
|
Federico Delbonis | 74 | 2 |
| ARG
|
Guido Andreozzi | 92 | 3 |
| CHI
|
Christian Garín | 103 | 4 |
 ESP
|
Pablo Andújar | 106 | 5 |
 BRA
|
Thiago Monteiro | 114 | 6 |
 ITA
|
Paolo Lorenzi | 115 | 7 |
 BOL
|
Hugo Dellien | 116 | 8 |
The following players received wildcards into the singles main draw:
Nicolás Álvarez
Emilio Gómez
Kento Tagashira Juan Pablo VarillasThe following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Christian Garín def. 
Pedro Sousa 6–4, 6–4. Guido Andreozzi / Guillermo Durán def. Ariel Behar / Gonzalo Escobar 2–6, 7–6(7–5), [10–5].
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