| Date: | 16–22 February |
| Edition: | 2nd (men/women) |
| Category: | ATP Challenger Tour (men) ITF Women's Circuit (women) |
| Location: | New Delhi, India |
| Surface: | Hard |
| Prize Money: | $100,000 (men) $25,000 (women) |
| Champms: |  Somdev Devvarman |
| Champws: |  Magda Linette |
| Champmd: |  Egor Gerasimov /  Alexander Kudryavtsev |
| Champwd: |  Tang Haochen / Yang Zhaoxuan |
| Before Name: | ONGC–GAIL Delhi Open |
The 2015 Delhi Open was a professional tennis tournament played on outdoor hard courts. It is the second edition of the tournament for the men and for the women. It was part of the 2015 ATP Challenger Tour and the 2015 ITF Women's Circuit, offering a total of $100,000 in prize money in the men's event and $25,000 in the women's event. It took place in New Delhi, India, on 16–22 February 2015.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Australia | James Duckworth | 113 | 1 | |
| Russian Federation | Alexander Kudryavtsev | 127 | 2 | |
 Japan | Yūichi Sugita | 133 | 3 | |
 Belgium | Ruben Bemelmans | 141 | 4 | |
| India | Somdev Devvarman | 147 | 5 | |
| Australia | Luke Saville | 166 | 6 | |
 Moldova, Republic of | Radu Albot | 167 | 7 | |
| Australia | Alex Bolt | 168 | 8 |
The following players received wildcards into the singles main draw:
Yuki Bhambri Karunuday Singh Sanam Singh Vishnu VardhanThe following players received entry from the qualifying draw:
The following players received entry into the main draw as a lucky loser:
See main article: 2015 Delhi Open – Men's singles.
Somdev Devvarman def. Yuki Bhambri, 3–6, 6–4, 6–0See main article: 2015 Delhi Open – Women's singles.
Magda Linette def. Tadeja Majerič, 6–1, 6–1See main article: 2015 Delhi Open – Men's doubles.
Egor Gerasimov / Alexander Kudryavtsev def. 
Riccardo Ghedin / Toshihide Matsui, 6–7(5–7), 6–4, [10–6]See main article: 2015 Delhi Open – Women's doubles.
Tang Haochen / Yang Zhaoxuan def. Hsu Ching-wen / Lee Pei-chi, 7–5, 6–1