U.D. Oliveirense

Oliveirense
Full nameUnião Desportiva Oliveirense
Nickname(s)Unionistas (Unionists)
Founded25 October 1922 (25 October 1922)
GroundEstádio Carlos Osório,
Oliveira de Azeméis
Capacity4,000
OwnerOnodera Group
PresidentNobuyuki Yamagata
Head coachRicardo Chéu
LeagueLiga Portugal 2
2023–2415th of 18
Websitewww.udoliveirense.pt

União Desportiva Oliveirense (UDO), commonly known as Oliveirense, is a Portuguese sports club from the city of Oliveira de Azeméis, in Aveiro District. The club was founded on 25 October 1922. The main football team currently plays at the Estádio Carlos Osório which holds a seating capacity of 4,000 and plays in Liga Portugal 2. As a multisports club it fields very successful teams in rink hockey and basketball as well. Its rink hockey team has won the Taça de Portugal on three occasions whilst its basketball team has won the Portuguese Basketball SuperCup and the Portuguese Basketball Cup. The Kelly–Simoldes–UDO cycling team, which holds a UCI Continental team licence, is affiliated with União Desportiva Oliveirense.

Oliveirense is part of the Aveiro Football Association which is the football association in charge of the district's football matters. In its entire history the club has won seven major trophies, of which their first was the AF Aveiro Championship in the 1945–46 season. Oliveirense are currently sponsored by Italian sportswear manufacturer Macron.

The club is owned by Japanese restaurant operator Onodera Group, which is also the owner of Yokohama FC.