2018 Argentina Open
Date	12–18 February
Edition	21st
Category	ATP World Tour 250 series
Draw	28S/16D
Prize money	$546,680
Surface	clay
Location	Buenos Aires, Argentina
Champions
Singles
Dominic Thiem
Doubles
Andrés Molteni / Horacio Zeballos
← 2017 · ATP Buenos Aires · 2019 →

The 2018 Argentina Open was a men's tennis tournament played on outdoor clay courts. It was the 21st edition of the ATP Buenos Aires event, and part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place in Buenos Aires, Argentina, from February 12 through 18, 2018.

Points and prize money

Point distribution

Prize money

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
AUT	Dominic Thiem	6	1
ESP	Pablo Carreño Busta	10	2
ESP	Albert Ramos Viñolas	21	3
ITA	Fabio Fognini	22	4
ARG	Diego Schwartzman	24	5
GBR	Kyle Edmund	26	6
URU	Pablo Cuevas	32	7
ESP	Fernando Verdasco	40	8

• ¹ Rankings are as of February 5, 2018.^[1]

Other entrants

The following players received wildcards into the singles main draw:

• Carlos Berlocq
• Pedro Cachin
• Nicolás Kicker

The following players received entry as special exempts:

• Roberto Carballés Baena
• Thiago Monteiro

The following players received entry using a protected ranking:

• Andreas Haider-Maurer

The following players received entry from the qualifying draw:

• Facundo Bagnis
• Thomaz Bellucci
• Marco Cecchinato
• Rogério Dutra Silva

Withdrawals

Before the tournament

• Marin Čilić → replaced by Guillermo García López
• Alexandr Dolgopolov → replaced by Florian Mayer
• Kyle Edmund → replaced by Gastão Elias
• Paolo Lorenzi → replaced by Dušan Lajović

Doubles main-draw entrants

Seeds

Country	Player	Country	Player	Rank1	Seed
COL	Juan Sebastián Cabal	COL	Robert Farah	35	1
MEX	Santiago González	CHI	Julio Peralta	57	2
CRO	Nikola Mektić	AUT	Alexander Peya	80	3
ARG	Andrés Molteni	ARG	Horacio Zeballos	84	4

• ¹ Rankings are as of February 5, 2018.

Other entrants

The following pairs received wildcards into the doubles main draw:

• Dorian Descloix / Gaël Monfils
• Guillermo Durán / Máximo González

Withdrawals

During the tournament

• Pablo Carreño Busta

Finals

Singles

• Dominic Thiem defeated Aljaž Bedene, 6–2, 6–4

Doubles

• Andrés Molteni / Horacio Zeballos defeated Juan Sebastián Cabal / Robert Farah, 6–3, 5–7, [10–3]