Gregory Junior Nwokolo (born 3 January 1986) is a Nigerian-Indonesian professional footballer who plays for Madura United in the Liga 1.
Greg began his career in Asia with Tampines Rovers. After that, in 2004, Greg signed for Young Lions and he left the Young Lions in the same year to moved to the Indonesian club, Persijatim Solo FC. After half a year in Indonesia for Persijatim Solo FC, he joined Singapore Armed Forces FC in January 2005 and signed back to PSIS Semarang in early 2006.
After a year and a half, in mid-2006 he joined to PSMS Medan. He played for PSMS Medan one year before being signed in January 2007 for Persis Solo, after 14 goals in 28 games in the 2007/2008 season was sold to Persija Jakarta.
In 2009, he left the club, Persija Jakarta and he want to seek his fortune in Europe and signed for the Portuguese club, SC Olhanense until 30 June 2010, in August 2010 before he moved back to Persija Jakarta as a free agent.
In the 2011-2012 season, he was recruited by Pelita Jaya together with Safee Sali and Alexander Bajevski. After that, Greg moved to Arema Indonesia for the 2012-2013 season.
On December 5, 2014, he signed again with Persija Jakarta.
As a Nigerian, Greg does not have any record that he has been capped in any match for both junior or senior Nigeria National Football Team. In early 2010, Greg was rumoured that he will soon play for the Indonesia national football team, though this rumour wasn't confirmed by Greg himself, what is interesting is that he does not confirm nor deny the rumour. After many speculations, in August 2011 Football Association of Indonesia finally confirmed that Greg has been naturalised, and got Indonesian citizenship officially on 10 October 2011. He made his debut for the Indonesia national football team in the 2015 AFC Asian Cup qualification campaign against Saudi Arabia on 23 March 2013.
|Indonesia national team|
|1||14 August 2013||Manahan Stadium, Surakarta, Indonesia||Philippines||1-0||2–0||Friendly|
- Tampines Rovers
- S.League: 2004
- Singapore Cup: 2004
On 15 April 2014, after the Persipura Jayapura vs Persebaya Surabaya match conference, Greg got into a fight with Jacksen F. Tiago because of personal problems that started in the Indonesia national football team. The situation then eased after police restrained both of them.