12 August 1992|
Buenos Aires, Argentina
|2014||→ Kalinga Lancers|
|Last updated on: 26 March 2019|
Peillat played for Club Ferrocarril Mitre in Argentina until the 2014 World Cup. After this tournament, he wanted to improve his play so he transferred to the Netherlands to play for HGC. During the 2014 Dutch winter break he played his first season in the Hockey India League for the Kalinga Lancers and in the 2015 Hockey India League played for the Uttar Pradesh Wizards. After he became topscorer in the 2015–16 Dutch hoofdklasse season with 33 goals, he transferred to German club Mannheimer HC. In the 2016 and 2017 German winterbreak he again played for the Uttar Pradesh Wizards in the 2016 and 2017 Hockey India League. In the 2018 winter break when there was no Hockey India League, he played in the Malaysia Hockey League for Terengganu Hockey Team. In April 2018 he renewed his contract for Mannheim for another three years until 2021.
At the 2012 Summer Olympics, Peillat competed for the National team. Gonzalo won the bronze medal at the 2014 World Cup where he was the top scorer of the tournament with 10 goals  and the gold medal at the 2015 Pan American Games in Toronto, Ontario, Canada. His best achievement came at the 2016 Summer Olympics where he won the gold medal for Argentina. He scored 11 goals in the tournament and became the highest scorer. After a dispute with the Argentine head coach German Orozco in January 2019, Peillat took a break from the Argentine national team.
- German national title: 2016–17
- Summer Olympics: 2016
- Pan American Games: 2015
- Pan American Cup: 2013, 2017
- South American Games: 2014
- South American Championships: 2013
- Summer Olympics top goalscorer: 2016
- Hockey World Cup top goalscorer: 2014
- Pan American Games top goalscorer: 2015
- Pan American Cup top goalscorer: 2017
- Champions Trophy top goalscorer: 2018
- South American Games top goalscorer: 2014
- Sultan Azlan Shah Cup top goalscorer: 2018
- FIH Rising Star of the Year: 2014
- "FIH announce the winners of the FIH 2014 Player of the Year". fih.ch. International Hockey Federation. 15 January 2015. Retrieved 4 February 2019.
- Jan-Cees, Butter (11 October 2014). "Gonzalo Peillat wil groeien bij HGC". trouw.nl (in Dutch). Trouw. Retrieved 17 January 2019.
- "Hockey India League (HIL) 2015: Full squads and player list of all six teams in the third edition". india.com. 23 January 2015. Retrieved 18 January 2019.
- Nugteren, Marco van (14 May 2016). "Gonzalo Peillat vertrekt bij HGC". hockey.nl (in Dutch). Retrieved 18 January 2019.
- Kamaruddin, Mustapha (3 January 2018). "Argentine hockey star Peillat joins Terengganu". malaymail.com. Malay Mail. Retrieved 18 January 2019.
- "Peillat extends his contract with Mannheimer HC until 2021". ehlhockey.vt. Euro Hockey League. 5 April 2018. Retrieved 18 January 2019.
- "Gonzalo Peillat". London 2012. The London Organising Committee of the Olympic Games and Paralympic Games Limited. Archived from the original on 17 May 2013. Retrieved 13 September 2012.
- Martínez, Belkis (23 January 2019). "Cortocircuito en los Leones: Gonzalo Peillat chocó con el DT Orozco y no estará en la Pro League". lanacion.com.ar (in Spanish). La Nacion. Retrieved 27 January 2019.