|Full name||Gregory Junior Nwokolo|
|Date of birth||3 January 1986|
|Place of birth||Onitsha, Nigeria|
|Height||1.75 m (5 ft 9 in)|
|2012||→ Chiangrai United (loan)||9||(5)|
|2015–2016||BEC Tero Sasana||19||(5)|
* Senior club appearances and goals counted for the domestic league only and correct as of 22 November 2019|
‡ National team caps and goals correct as of 25 March 2019
Greg began his career in Asia with Tampines Rovers. After that, in 2004 he signed for Young Lions.  He left them in the same year to moved to the Indonesian club, Persijatim Solo.  After half a year in Indonesia for Persijatim Solo FC, he joined Singapore Armed Force FC on January 2005 and signed back to PSIS Semarang in early 2006.
After a year and a half, in mid-2006 he joined 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, S.C. Olhanense until 30 June 2010,  in August 2010 before he moved back to Persija Jakarta as a free agent.
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|
- Scores and results list Indonesia's goal tally first.
|1.||14 August 2013||Manahan Stadium, Surakarta, Indonesia||Philippines||1–0||2–0||Friendly|
|2.||25 March 2019||Mandalarthiri Stadium, Mandalay, Myanmar||Myanmar||1–0||2–0||Friendly|
- Tampines Rovers
On 15 April 2014, after the Persipura Jayapura vs Persebaya Bhayangkara 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.
- "Gregory Junior Nwokolo". Soccerway. Global Sports Media. Retrieved 10 October 2011.
- "Kini Lebih Jinak & Fokus". Archived from the original on 5 October 2009. Retrieved 29 September 2009.
- Jakarta Casual: Greg Nwokolo
- Pendukung PSMS Medan
- Jakarta Casual: Greg Nwokolo (Persis Solo)
- "Sriwijaya Deal in Limbo As Nwokolo Heads Off For Tryout in Germany". Archived from the original on 10 August 2011. Retrieved 29 September 2009.
- Nigerian striker Nwokolo signs for Olhanense
- "RESMI: Greg Nwokolo Kembali Bela Persija Jakarta" (in Indonesian). Retrieved 5 December 2014.
- "Greg Gembira Jadi Warga Negara Indonesia". Archived from the original on 13 December 2011. Retrieved 10 October 2011.
- "Indonesia Edge Philippines in Solo; Laos U19 Stumble in Pleiku". AseanFootball.org. ASEAN Football Federation. 15 August 2013. Retrieved 1 December 2014.
- "Jacksen F Tiago & Greg Nwokolo Adu Mulut". goal.com.
- Ananda Lathifah Rozalina (23 May 2018). "Wow! 5 Fakta Kimmy Jayanti Ini Buktikan Greg Nwokolo Dapatkan Rejeki Nomplok, Nomor 2 Istri Idaman Banget Deh ("Wow! 5 Facts That Prove That Kimmy Jayanti's Husband Greg Nwokolo Was Lucky to Marry Her")". BolaSport.com. Retrieved 24 May 2018.