| Date: | 1–6 January 2018 |
| Edition: | 23rd |
| Category: | World Tour 250 |
| Draw: | 28S / 16D |
| Prize Money: | $501,345 |
| Surface: | Hard / outdoor |
| Location: | Pune, India |
| Champs: |  Gilles Simon[1] |
| Champd: | Robin Haase / Matwé Middelkoop[2] |
| Before Name: | Aircel Chennai Open |
| Main Name: | Maharashtra Open Maharashtra Open |
The 2018 Tata Open Maharashtra was a men's tennis tournament played on outdoor hard courts that was part of the World Tour 250 series of the 2018 ATP World Tour. It was the 23rd edition of the only ATP tournament played in India and took place in Pune, India, from 1 January through 6 January 2018. It was the first edition of the tournament to be held after it was moved from Chennai to Pune. Unseeded Gilles Simon won the singles title.[3] [4]
See main article: 2018 Tata Open Maharashtra – Singles.
Gilles Simon defeated Kevin Anderson, 7–6(7–4), 6–2See main article: 2018 Tata Open Maharashtra – Doubles.
Pierre-Hugues Herbert / Gilles Simon, 7–6(7–5), 7–6(7–5)| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Singles | 250 | 150 | 90 | 45 | 20 | 0 | 12 | 6 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 0 |
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q2 | width=85 | Q1 |
| Singles | $89,435 | $47,105 | $25,515 | $14,535 | $8,565 | $5,075 | $2,285 | $1,145 | ||
| Doubles | $27,170 | $14,280 | $7,740 | $4,430 | $2,590 | |||||
| Doubles prize money per team | ||||||||||
| width=70 | Country | width=175 | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| Marin Čilić | 6 | 1 | |||
| Kevin Anderson | 14 | 2 | |||
 Spain | Roberto Bautista Agut | 20 | 3 | ||
| France | Benoît Paire | 41 | 4 | ||
| Robin Haase | 42 | 5 | |||
 Czech Republic | Jiří Veselý | 62 | 6 | ||
 Kazakhstan | Mikhail Kukushkin | 74 | 7 | ||
| France | Pierre-Hugues Herbert | 81 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry using a protected ranking:
The following players received entry from the qualifying draw:
Jérémy Chardy →replaced by Pablo Andújar
Rogério Dutra Silva →replaced by 
Marco Cecchinato
Yuki Bhambri
Lukáš Lacko →replaced by Roberto Carballés Baena
Ruben Bemelmans| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Sweden | Robert Lindstedt | Franko Škugor | 114 | 1 | ||
| Robin Haase | Matwé Middelkoop | 117 | 2 | |||
| Hans Podlipnik Castillo |  Belarus | Andrei Vasilevski | 119 | 3 | ||
| India | Rohan Bopanna | India | Jeevan Nedunchezhiyan | 120 | 4 |
The following pairs received wildcards into the doubles main draw: