|Date of birth||6 March 1990|
|Place of birth||Lyon, France|
|Height||1.81 m (5 ft 11 in)|
|Playing position(s)||Centre back|
|1999–2003||Bellecour Perrache Lyon|
|2010–2011||→ Dijon (loan)||3||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 14:59, 12 September 2019 (UTC)|
‡ National team caps and goals correct as of 3 January 2011
Prior to the start of the 2010–11 season, Seguin signed his first professional contract after agreeing to a three-year deal with Olympique Lyonnais. He joined Dijon FCO on loan for the season on 30 September 2010. He made his professional debut with Dijon on 15 October 2010 in a Ligue 2 match against Metz. Seguin played the entire match in a 3–1 defeat.
- "Nicolas Seguin prêté au Dijon FCO" (in French). Olympique Lyonnais. 30 September 2010. Retrieved 3 January 2011.
- "Metz v. Dijon Match Report" (in French). Ligue de Football Professionnel. 15 October 2010. Retrieved 3 January 2011.
- "Trois espoirs lyonnais filent à Tours" (in French). foot01.com. 23 June 2012.
- "Un Joueur Prolonge À Lyon-Duchère AS" (in French). actufoot.com. 25 January 2019.