Oi headquarters details
Location map
Open in Google MapsAll Oi office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Rio de Janeiro HQ | Rio de Janeiro | Brazil | Headquarters |
About Oi
Oi (Nasdaq (NASDAQ): OIBR.C) is headquartered in Rio de Janeiro, Rio de Janeiro, Brazil. Founded in 1998, the company operates across 1 countries with approximately 18,947 employees worldwide.
Where is Oi's main office?
Oi's main headquarters office is located at Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Rio de Janeiro . This serves as the company's primary corporate address and is home to its executive leadership team.
Oi regional offices
Beyond its headquarters in Rio de Janeiro, Oi maintains 162 offices across 1 countries. Regional offices span 1 countries.
Oi contact information
The main switchboard for Oi headquarters can be reached at 552131312918. For investor relations, visit oi.com.br/investor-relations.
What does Oi do?
Oi (Portuguese for 'Hi'), formerly known as Telemar, is the largest fixed telephone operator and the fourth mobile telephone operator in Brazil, being the third largest telecommunication company in Latin America. It is headquartered in Rio de Janeiro.
Frequently asked questions
Where is Oi headquarters?
Oi's headquarters is located at Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Rio de Janeiro , Brazil.
How many offices does Oi have?
Oi operates 162 offices across 1 countries as of 2026.
What is Oi's corporate address?
The official corporate address is Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Rio de Janeiro .
When was Oi founded?
Oi was founded in 1998 and has grown to employ approximately 18,947 people worldwide.
What is Oi's phone number?
The main phone number for Oi headquarters is 552131312918.