The 2026 Oeiras Indoors was a professional tennis tournament played on hard courts. It was the 8th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Oeiras, Portugal from 19 to 25 January 2026.

Singles main-draw entrants Seeds Country Player Rank1 SeedBilly Harris1211Jan Choinski1242Vilius Gaubas1293Francesco Passaro1404Henrique Rocha1585Daniel Mérida1646Jurij Rodionov1677Nicolás Mejía1698 1 Rankings are as of 12 January 2026.

Other entrants The following players received wildcards into the singles main draw: Gastão Elias Tiago Pereira Tiago Torres

The following player received entry into the singles main draw through the Next Gen Accelerator programme: Petr Brunclík

The following players received entry from the qualifying draw: Calvin Hemery Maks Kaśnikowski Stefan Kozlov Mark Lajal Henri Squire Denis Yevseyev

The following players received entry as lucky losers: Andrés Andrade Mikhail Kukushkin Tyler Zink

Champions Singles

Chris Rodesch def. Zsombor Piros 6–4, 4–6, 6–2.

Doubles

Cleeve Harper / David Stevenson def. Francisco Rocha / Tiago Torres 6–3, 3–6, [12–10].

References