Globacom Limited, commonly known as Glo, is a Nigerian multinational telecommunications company founded on 29 August 2003 by Mike Adenuga.

As of June 2018, the company has employed more than 3,500 people worldwide.

GLO has over 45 million subscribers (December 2018), making it the second-largest network operator in Nigeria.

In 2011, GLO became the first telecommunication company to build an $800 million high-capacity fiber-optic cables known as Glo-1, a submarine cable from the United Kingdom to Nigeria. It is the first successful submarine cable from the United Kingdom to Nigeria.

Globacom has the following strategic business units: Glo mobile, Glo Broad Access, Glo Gateway, and Glo-1.

Glo Mobile, a subsidiary of Globacom, is Nigeria’s second-largest Mobile Network Operator. In the first year of operation, it had one million subscribers in over 87 towns in Nigeria and over 120 billion Naira in revenues. Glo Mobile has now spread to other African countries, namely Benin and Ghana. Glo Mobile’s subscriber base in Nigeria stood at over 45 million by December 2018.