|Full name||Nikolaos Nioplias|
|Date of birth||17 January 1965|
|Place of birth||Galatini, Kozani, Greece|
|Height||1.73 m (5 ft 8 in)|
|* Senior club appearances and goals counted for the domestic league only.
His career began with OFI Crete in 1983, winning the Greek Cup in 1987, and he remained for a decade before moving to Panathinaikos. In his first season, he won the cup again and in 1994–95 they completed the domestic double. The next season the Athens side retained the title and Nioplias was a member of the team which reached the UEFA Champions League semi-finals in 1995.
In 1996 he returned to OFI and remained for six seasons until 2002, when he moved to Chalkidona FC. He played for the newly promoted side until summer 2004 when he ended his career, having racked up 509 Greek top-flight appearances.
He played for Greece under-18 at the 1984 UEFA European under-18 championship. In 1988, as a member of Greece under-21, he helped his team reach the final of the 1988 UEFA European Under-21 Football Championship. He was promoted to the senior team the same year, and was a member of the squad which qualified to the 1994 FIFA World Cup. He appeared in all three games Greece played at the World Cup, losing every one of them.
In total, he made 44 appearances and scored 1 goal for Greece.
After getting his coaching diploma, in January 2005 he was appointed as the coach of the Greece national under-19 football team. He led the team to the 2005 U19 European Championship which took place in Northern Ireland, but failed to progress past the group stage, despite a victory against the hosts. This was due to two straight 3–0 defeats in the remaining games of the group, with Nioplias blaming the poor fitness of his players.
Two years later, he led Greece to the final of the U19 European Championship after remaining unbeaten in their group, which featured Spain, Portugal and the host nation Austria. Greece than beat Germany 3–2 in the semi-final with a 90th-minute header after Greece had a player sent off in the 61st minute. The final between Spain (who beat France in the other semi-final) and Greece was played on 27 July and Greece lost 1–0, despite a convincing second half display.
Nioplias was appointed as the Panathinaikos head coach, alongside Krzysztof Warzycha on 8 December 2009, immediately after the former manager, Henk ten Cate, was released. Nioplias stated: "It is a great honour for me to be the manager of Panathinaikos. Starting from today, we are getting to work. My aim is to achieve as a coach what I have achieved as a player: to win titles". He managed to do the double in 2010, winning both the Greek Superleague and the Greek Cup.
He left Panathinaikos on 15 November 2010 by mutual consent due to a disappointing run of results domestically and abroad.
In June 2011, Nioplias agreed with the Cyprus Football Association to be the manager of the Cyprus national football team until the end of the UEFA Euro 2012 qualifiers and for the 2014 World Cup qualifiers. He made his official debut in a EURO 2012 qualifier against Portugal, where his team suffered a 0–4 defeat at home. After Cyprus' 0–2 loss to Slovenia on 12 September 2013, Nioplias resigned in the wake of Cyprus's poor showing in the 2014 World Cup qualifiers.
- As of 19 December 2016
- Greek Cup: 1987
- Giannopoulos, Nikos (8 December 2009). "Ο πολλά υποσχόμενος Νίκος Νιόπλιας (The very promising Nikos Nioplias)" (in Greek). Contra.gr.
- Moschos, Sokratis (8 December 2009). "Το προφίλ του Νίκου Νιόπλια (Nikos Nioplias profile)" (in Greek). Sport24.gr.
- "Nikos Nioplias statistics". FIFA.com. Retrieved 17 March 2012.
- Mamrud, Roberto (2009-05-01). "Greece – Record International Players". RSSSF. Retrieved 2009-09-21.
- Papantonopoulou, Vassiliki (3 July 2007). "Nioplias going for glory again". uefa.com.
- "Coaches leaving in mixed moods". uefa.com. 24 July 2005.
- "EURO U-19: Στους "4" οι Νέοι! (Greece U19 through to the semi-finals!)" (in Greek). epo.gr. 21 July 2007.
- "Spain savour double delight". uefa.com. Retrieved 17 March 2012.
- "EURO U-19: Η Εθνική Νέων στον τελικό! (Greece U19 to the final!)" (in Greek). epo.gr. 24 July 2007.
- Haslam, Andrew; Woloszyn, Paul (27 July 2007). "Stratilatis aims for further finals". uefa.com. Archived from the original on 15 October 2007.
- "Στην Ελπίδων ο Νιόπλιας (Nioplias the U21 coach)" (in Greek). Contra.gr. 3 September 2007.
- "Πρεμιέρα για τον Ν. Νιόπλια στην Ελπίδων (Nikos Nioplias debuting for Greece U21)" (in Greek). epo.gr. 3 September 2007.
- "Εφυγε ο Τεν Κάτε, ήρθαν Νιόπλιας, Βαζέχα! (Ten Cate left, Nioplias-Warzycha came!)" (in Greek). Ta Nea. 8 December 2009.
- "Nioplias replaces Ten Cate at Greens". uefa.com. 8 December 2009.
- "Νιόπλιας: "Μην με απαξιώνετε, δεν ξέρω αν θα μείνω!" (Nioplias: "Don't de-value me, I don't know if I'll stay!")" (in Greek). Eleftherotypia. 25 April 2010.
- "Nioplias leaves Panathinaikos on amicable terms". uefa.com. 15 November 2010.
- Leonidou, John (8 June 2011). "Nioplias to take up Cyprus challenge". uefa.com.
- "Nioplias starts with Portugal test". uefa.com. 31 July 2011.
- Burgess, Harvey (2 September 2011). "Cyprus 0–4 Portugal: Cristiano Ronaldo double inspires Iberians to easy victory". Goal.com.
- "Αποχωρεί από την Εθνική ο Νίκος Νιόπλιας". CFA. 12 September 2013.
- "Cyprus accept coach Nioplias's resignation". UEFA. 12 September 2013.