This list covers 20 basketball teams whose names start with the letter O, running from “Oklahoma City Thunder” to “CSM CSU Oradea”. You’ll find franchises from the NBA and its G League alongside clubs from Italy, Greece, Spain, Belgium, Germany, France, Japan, Argentina, and beyond. Fans use a list like this to compare teams across countries, discover new clubs to follow, or settle a debate about which “O” team belongs in the conversation.

Basketball teams are organized groups of players who compete together under a shared name, city, and league, following the sport’s official rules. Some, like Orlando Magic, are known worldwide for producing NBA stars such as Shaquille O’Neal, while others, like BC Oostende, carry deep local pride as the most successful club in their country’s history. Together they show how basketball connects big cities and small towns through friendly rivalry.

Below you’ll find the table with each team’s country, city, league, and a short description.

Team: the official name of the basketball club, so you can quickly identify and search for it.

Country: the nation where the team is based, helping you place each club on the map.

City: the specific city the team calls home, useful if you’re tracking local or regional clubs.

League: the competition the team currently plays in, giving you a sense of its level and reach.

Description: a short summary of the team’s history, achievements, or reputation, so you can learn something useful at a glance.

Basketball Teams

TeamCountryCityLeague
Oklahoma City ThunderUSAOklahoma CityNBA
Orlando MagicUSAOrlandoNBA
Oklahoma City BlueUSAOklahoma CityNBA G League
Olimpia MilanoItalyMilanLega Basket Serie A
Olympiacos B.C.GreecePiraeusGreek Basket League
Olympia LarissaGreeceLarissaGreek Basket League
Obradoiro CABSpainSantiago de CompostelaLiga ACB
Ourense BaloncestoSpainOurenseLEB Oro
BC OostendeBelgiumOstendBNXT League
EWE Baskets OldenburgGermanyOldenburgBasketball Bundesliga
BK OpavaCzech RepublicOpavaCzech National Basketball League
NH OstravaCzech RepublicOstravaCzech National Basketball League
BC OdessaUkraineOdesaUkrainian Basketball SuperLeague
Olympique AntibesFranceAntibesLNB Pro B
Orléans Loiret BasketFranceOrléansLNB Pro A
Openjobmetis VareseItalyVareseLega Basket Serie A
Osaka EvessaJapanOsakaB.League
Oita Heat DevilsJapanOitaB.League
Obras BasketArgentinaBuenos AiresLiga Nacional de Básquet
CSM CSU OradeaRomaniaOradeaLiga Națională

Descriptions

Oklahoma City Thunder
An NBA franchise that relocated from Seattle in 2008, built around young stars and known for a fast, modern offense and one of the league’s best farm systems.
Orlando Magic
An NBA team founded in 1989, known for producing stars like Shaquille O’Neal and Dwight Howard and for its energetic, up-tempo style.
Oklahoma City Blue
The official development-league affiliate of the Oklahoma City Thunder, used to groom prospects and test lineups before NBA call-ups.
Olimpia Milano
One of Europe’s most storied clubs, this Milan side has won numerous Italian titles and multiple European championships since the mid-20th century.
Olympiacos B.C.
A powerhouse Greek club and multiple-time EuroLeague champion, known for passionate fans and a long rivalry with Panathinaikos.
Olympia Larissa
A historic Greek club based in Larissa that has competed for decades in the country’s top domestic league.
Obradoiro CAB
A Galician club that reached Spain’s top flight in 2013 and has since built a reputation for competitive, well-organized basketball.
Ourense Baloncesto
A Spanish club representing the city of Ourense, competing in the country’s second-tier professional league.
BC Oostende
A dominant Belgian club nicknamed the “Kangoeroes,” widely regarded as the most successful team in Belgian basketball history.
EWE Baskets Oldenburg
A German club known for a passionate home crowd and a German Cup title, playing top-flight basketball in northern Germany.
BK Opava
A Czech club and multiple national champion that has represented the city of Opava in top domestic competition for decades.
NH Ostrava
A professional club from the industrial city of Ostrava competing in the Czech top division.
BC Odessa
A Ukrainian professional club representing the Black Sea port city of Odesa in the country’s top league.
Olympique Antibes
A French club based on the Riviera with a long history in French professional basketball, including past top-flight seasons.
Orléans Loiret Basket
A French club that won the national championship in 2012, known for developing talent within the French basketball system.
Openjobmetis Varese
The modern incarnation of the historic Pallacanestro Varese club, one of Italy’s most decorated teams with multiple European titles in its past.
Osaka Evessa
A Japanese professional club and inaugural champion of Japan’s original bj-league, now competing in the unified B.League.
Oita Heat Devils
A Japanese club based in Oita that plays in the lower tiers of Japan’s national B.League system.
Obras Basket
An Argentine club, formally Obras Sanitarias, with a long history in the country’s top league and a strong local following in Buenos Aires.
CSM CSU Oradea
A Romanian club representing the city of Oradea, regularly competing near the top of the national basketball league.
If you think there is a missing term, let us know using the contact form.