| Date: | 23 February – 1 March |
| Edition: | 18th |
| Category: | ATP World Tour 250 series |
| Prize Money: | $573,750 |
| Draw: | 28S / 16D |
| Surface: | Clay / outdoor |
| Location: | Buenos Aires, Argentina |
| Champs: |  Rafael Nadal |
| Champd: |  Jarkko Nieminen /  André Sá |
| Before Name: | Copa Claro |
| Main Name: | ATP Buenos Aires |
The 2015 Argentina Open was a men's tennis tournament played on outdoor clay courts. It was the 18th edition of the ATP Buenos Aires event, and part of the ATP World Tour 250 series of the 2015 ATP World Tour. It took place in Buenos Aires, Argentina, from 23 February through 1 March 2015. Rafael Nadal won the singles title.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q3 | width=85 | Q2 | width=85 | Q1 |
| Singles | 250 | 150 | 90 | 45 | 20 | 0 | 12 | 6 | 0 | 0 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 0 |
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q3 | width=85 | Q2 | width=85 | Q1 |
| Singles | $91,050 | $47,950 | $25,975 | $14,800 | $8,720 | $5,165 | $835 | $400 | $0 | |||
| Doubles | $27,660 | $14,540 | $7,880 | $4,510 | $2,640 | |||||||
| Doubles prize money per team | ||||||||||||
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Spain | Rafael Nadal | 3 | 1 | |
| Spain | Tommy Robredo | 18 | 2 | |
| Pablo Cuevas | 23 | 3 | ||
 Italy | Fabio Fognini | 28 | 4 | |
 Argentina | Leonardo Mayer | 30 | 5 | |
 Czech Republic | Jiří Veselý | 44 | 6 | |
| Spain | Pablo Andújar | 50 | 7 | |
| Spain | Pablo Carreño Busta | 55 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Pablo Carreño Busta (illness)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Pablo Cuevas | Spain | David Marrero | 74 | 1 | ||
| Argentina | Máximo González | Argentina | Horacio Zeballos | 147 | 2 | |
 Sweden | Johan Brunström |  United States | Nicholas Monroe | 150 | 3 | |
| Czech Republic | František Čermák | Czech Republic | Jiří Veselý | 163 | 4 |
The following pairs received wildcards into the main draw:
Fabio Fognini (illness)See main article: 2015 Argentina Open – Singles.
Rafael Nadal defeated Juan Mónaco, 6–4, 6–1See main article: 2015 Argentina Open – Doubles.
Jarkko Nieminen / André Sá defeated Pablo Andújar / 
Oliver Marach, 4–6, 6–4, [10–7]