|Full name||Sebastián Ricardo Nayar|
|Date of birth||10 May 1988|
|Place of birth||Buenos Aires, Argentina|
|Height||1.89 m (6 ft 2 1⁄2 in)|
|Playing position||Central Midfielder|
|2011||→ Aldosivi (loan)||11||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 6 December 2017.
Born in Buenos Aires, Nayar began his career with local team Boca Juniors, making one appearance in the 2008 Clausura. Nayar then moved to Spanish team Recreativo Huelva at the end of the season, despite still being contracted to Boca. During his debut season with Recreativo, Nayar made 14 appearances in the league. Nayar later signed for Colombian team Deportivo Cali, moving on to Mexican team Atlante, before returning to Argentina in January 2011 with Aldosivi. In September 2012, he joined Orihuela. In January 2013, he left Orihuela and joined San Roque de Lepe. He joined Greek club Kerkyra for the 2013–14 season. On August 11, 2015, he signed with Greek Football League club AE Larissa. On 17 February 2016 Nayar was released from his contract, due to a disciplinary offence. Five days later, On 22 February 2016, there was an official announcement from the club's major shareholder Alexis Kougias, stating that the player will finally remain in the team's squad. On 14 July 2016, Nayar left the club by mutual agreement. In September 2016, Nayar signed for Panegialios.
- "El Lincoln le arrebata el primer título de la temporada al Europa de Johny". www.deportesalminuto.es. Retrieved 2017-09-24.
- "Player profile" (in Spanish). Fútbol XXI. Retrieved 9 September 2010.
- "FIFA rule in favour of Boca over Nayar contract". ESPNsoccernet. 27 September 2008. Retrieved 9 September 2010.
- "Player profile". ESPNsoccernet. Retrieved 9 September 2010.
- "Player profile" (in German). Weltfußball.de. Retrieved 9 September 2010.
- El ex de Recre, Sebastián Nayar, firma un contrato con el Orihuela; Planeta Fichajes, 30 September 2012 (in Spanish)
- Sebastián Nayar ficha por el San Roque de la Segunda B española; Bolivia.com, 22 January 2013 (in Spanish)
- Sebastián Nayar at Soccerway
- Ανακοίνωσε Ναγιάρ η Λάρισα! (Nayar signed with Larissa) gazzetta.gr 11 August 2015 (Greek)
- Ανακοίνωσε τον διεθνή άσσο Σεμπαστιάν Ναγιάρ (Argentinian International Sebastian Nayar signed with Larissa) crimsonscorer.gr 11 August 2015 (Greek)
- Λύση της συνεργασίας με τον Σεμπαστιάν Ναγιάρ (Greek) aelfc.gr 17 February 2016 (Greek)
- Επέστρεψε στην ΑΕΛ ο Σεμπαστιάν Ναγιάρ (Greek) aelole.gr 22 February 2016 (Greek)
- "Λύση συμβολαίου με Σεμπαστιάν Ναγιάρ (Greek)". aelfc.gr (official). 14 July 2016.