| 2025 Oeiras Indoors | |
|---|---|
| Date | 6 – 12 January |
| Edition | 5th |
| Surface | Hard (indoor) |
| Location | Oeiras, Portugal |
| 2024 Champions | |
| Singles | |
 Leandro Riedi | |
| Doubles | |
 Karol Drzewiecki / Piotr Matuszewski | |
The 2025 Oeiras Indoors was a professional tennis tournament played on hard courts. It was the 5th edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Oeiras, Portugal from 6 to 12 January 2025.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 SRB | Hamad Medjedovic | 114 | 1 |
| SUI | Alexander Ritschard | 118 | 2 |
 KAZ | Beibit Zhukayev | 243 | 3 |
| KAZ | Denis Yevseyev | 246 | 4 |
 CAN | Liam Draxl | 247 | 5 |
 CHI | Matías Soto | 248 | 6 |
 HUN | Zsombor Piros | 249 | 7 |
 ESP | Pol Martín Tiffon | 251 | 8 |
The following players received wildcards into the singles main draw:
Pedro Araújo Frederico Ferreira Silva Duarte Vale The following players received entry from the qualifying draw:
vs. / vs. / The 1999 Estoril Open was a tennis tournament played on outdoor clay courts at the Estoril Court Central in the Oeiras Municipality in Portugal that was part of the International Series of the 1999 ATP Tour and of Tier IVa of the 1999 WTA Tour. The tournament was held from 5 April until 12 April 1999. Albert Costa and Katarina Srebotnik won the singles title.
The 2014 Portugal Open was a tennis tournament played on outdoor clay courts. It was the 25th edition of the Portugal Open for the men and the 18th for the women, and was part of the ATP World Tour 250 series of the 2014 ATP World Tour, and of the International-level tournaments of the 2014 WTA Tour. Both the men's and the women's events took place at the Estádio Nacional in Oeiras, Portugal, from April 26 through May 4, 2014.
The 2021 Open de Oeiras was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Oeiras, Portugal between 29 March and 3 April 2021.
The 2021 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the second edition of the tournament, part of the 2021 ATP Challenger Tour. It took place in Oeiras, Portugal between 5 and 11 April 2021.
The 2021 Open de Oeiras III was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Oeiras, Portugal between 17 and 23 May 2021.
The 2021 Open de Oeiras IV was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Oeiras, Portugal between 24 and 30 May 2021.
The 2022 Open de Oeiras was a professional tennis tournament played on clay courts. It was the fifth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Oeiras, Portugal between 28 March and 4 April 2022.
The 2022 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Oeiras, Portugal between 4 and 10 April 2022.
The 2022 Open de Oeiras III was a professional tennis tournament played on clay courts. It was the seventh edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Oeiras, Portugal between 20 and 26 June 2022.
The 2023 Oeiras Indoors was a professional tennis tournament played on hard courts. It was the 1st edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal from 2 to 8 January 2023.
The 2023 Oeiras Indoors II was a professional tennis tournament played on hard courts. It was the 2nd edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal from 9 to 14 January 2023.
The 2023 Open de Oeiras was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal between 17 and 23 April 2023.
The 2023 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal between 15 and 20 May 2023.
The 2024 Oeiras Indoors was a professional tennis tournament played on hard courts. It was the 3rd edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Oeiras, Portugal from 1 to 7 January 2024.
The 2024 Oeiras Indoors II was a professional tennis tournament played on hard courts. It was the 4th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Oeiras, Portugal from 8 to 13 January 2024.
The 2024 Open de Oeiras was a professional tennis tournament played on clay courts. It was the tenth edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Oeiras, Portugal between 15 and 21 April 2024.
The 2024 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the 11th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Oeiras, Portugal between 13 and 18 May 2024.
The 2025 Adelaide International is a professional tennis tournament on the 2025 ATP Tour and 2025 WTA Tour. It is a combined ATP Tour 250 and WTA 500 tournament to be played on outdoor hard court at Memorial Drive Tennis Centre, Adelaide, Australia. The tournament will be held from 6 to 11 January 2025.
The 2025 Nonthaburi Challenger II was a professional tennis tournament played on hard courts. It was the 12th edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Nonthaburi, Thailand from 6 to 12 January 2025.
The 2025 Lexus Nottingham Challenger was a professional tennis tournament played on indoor hard courts. It was the second edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Nottingham, United Kingdom between 6 and 12 January 2025.