|Full name||Sebastián Eduardo Leto|
|Date of birth||30 August 1986|
|Place of birth||Alejandro Korn, Argentina|
|Height||1.88 m (6 ft 2 in)|
|2008–2009||→ Olympiacos (loan)||24||(1)|
|2015–2016||→ Lanús (loan)||4||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 18 October 2015.
Born in Alejandro Korn, Leto began his career with Buenos Aires club Lanús, making his first team debut on 25 June 2005. He spent two seasons at the club, making 52 appearances and scoring 8 goals.
Following this he featured in another Champions League game and two Football League Cup matches. He never made his Premier League debut due to problems with his passport, forcing him to play in the Liverpool reserve team instead. Leto was granted an Italian passport in mid-2007 but this was later revoked, making the Argentine need to apply for a work permit; a request which was later refused. Liverpool manager Rafael Benítez criticised the decision given the player's track record in the Champions League and national selection for the Olympics.
On 16 September 2008, Leto scored the second goal in the 2–0 UEFA Cup first round, first leg victory away against FC Nordsjælland. He scored his first and only league goal in a 2–1 home win against Thrassyvoulos in December 2008.
On 23 June 2009, Liverpool accepted an offer from Panathinaikos believed to be in the region of £3,000,000. On 1 July 2009, the player signed a 5-year contract for about 1.2 million (with bonus fees). On 28 July, Leto made his debut appearance for the greens on the away UEFA Champions League qualifying stages game against Sparta Prague, coming from the bench on the second half. On 8 August in Athens, Panathinaikos needed a two-goal margin victory and Leto was one of the starting eleven for the Greek side who dominated the game 3–0 and qualified to the next round. On 19 August, Leto came from the bench to score in Panathinaikos 2–3 defeat to Atlético Madrid in the UEFA Champions League play-off first leg. On 22 August Leto scored two goals against the Cretan side Ergotelis away in a 3–0 victory. On 13 September, Leto scored the only goal against the Thracians Panthrakikos in an important 1–0 away victory. On 24 April 2010 he scored the victorious goal of Panathinaikos at the Greek Cup final against Aris Thessaloniki. The previous week he also won the Greek championship, thus achieving the double (second consequent double of his career, after the first one with Olympiacos in 2009). After the departure of captain Djibril Cissé and vice-captain Gilberto Silva he was chosen after two seasons serving the club to be the 3rd Captain.
Leto started the 2011–12 Superleague Greece in commanding form, netting a brace in a 3–2 victory over Xanthi on 16 October. He followed this up by notching another brace against Ergotelis on 22 October, in which Panathinaikos ran out 4–0 winners. Leto's good performances were enough for Serie B table-toppers Torino to report interest in the Argentine, as they look to regain status in the Italian top flight.
On 30 October, Panathinaikos faced PAOK, Leto grabbed a goal as his side won 3–1 and maintained their lead at the top of the Greek first division. In the following game against Ergotelis, Leto added two more goals as his side won 4–0. Leto's inspired start to the season resulted with ten goals and one assist from the first seven games. His performances were enough to guide Panathinaikos to the top of the table on 19 points, having played fewer games than most of their title challengers. Leto continued in brilliant form scoring 15 goals in 13 matches as well as 5 assists, keeping Panathinaikos still in the fight for the title.
Through the first 17 league fixtures, Leto lead the goal-scorers chart with 15 league goals. On 25 January 2012, Leto suffered a knee injury and flew to Bologna to be checked by a specialist who said that he would be forced out at least until March. It was revealed in March though that he would not be available until at least early April with continued knee problems. After a few days, it was revealed that Leto will not be available for the whole season. On 22 January 2013, Leto terminated his contract with Panathinaikos.
On 16 April 2013, Catania confirmed that they had signed the Argentine on a deal over a few seasons, the exact details of the length and payment were not released. Sebastian Leto was brought in during the summer 2013, on a free transfer as a replacement for the departed Alejandro Gomez. The former Panathinaikos winger had a history of knee problems, which ultimately led to his release from the Greek club. Catania took a gamble, but he failed to live up to expectations. Leto suffered another knee injury and was being unfairly compared to Gomez, who was arguably the Rossazzuri’s best player, but the Argentinean was sloppy with the ball, wasteful with possession and often very slow. He did not succeed to make an impact in the club, therefore in January 2015, he signed a long year loan with his former Argentinian club Lanús.
At the end of the loan, Cypriot club Anorthosis have made an offer for Sebastian Leto, but the Argentine left winger asked for a 48 hours deadline because he prefers to join Greek side Panathinaikos. The 29-year-old playerwas recently released by Lanús and wants to return to the <<Greens>> after three years, asking for a low-salary contract. 
Second spell at Panathinaikos
According to latest news, Panathinaikos will sign Sebastian Leto after being released from Catania. The manager of Palermo, Guillermo Barros Schelotto spoke about his compatriot and former player at Lanús, Sebastian Leto, and his desire to return in Greece for Panathinaikos."Leto was enjoying being in an argentine club and having his family along, but he always wanted to return in Greece for Panathinaikos. He had a serious accident, but he is strong and despite not playing match in Lanus, in a good fitness condition. Sebastian is a talented and clever player, with quality and still a future ahead of him, he will help Panathinaikos very much and maybe the next season decrease the difference from champions Olympiakos", said the 43-year-old Argentine at SDNA. 
On 5 February 2016, Panathinaikos officially announced the signing of Sebastian Leto until the end of next season and the Argentinian left winger returned to the club after three years. At first, it was said that Leto would wear the team's only retired number, no. 13. Eventually, the player said that he picked no. 5.
- As of 10 October 2015.
|England||League||FA Cup||League Cup||Europe||Total|
- Sebastian Eduardo Leto – Estadisticas, footballxii.com. Retrieved on 2008-07-12. (Spanish)
- Leto Completes Anfield Switch, liverpoolfc.tv, 10 August 2007. Retrieved on 12 July 2008
- "Liverpool overpower Toulouse". ESPN. 28 August 2007. Archived from the original on 24 February 2012. Retrieved 12 July 2008.
- "Leto Passport Farce". News of the World. Archived from the original on 28 March. Retrieved 12 July 2008. Check date values in:
- Hunter, Steve. Leto Voted Reserves' Star Man, liverpoolfc.com, 5 October 2007. Retrieved on 2014-08-21.
- "Liverpool denied permit for Leto". BBC Sport. 4 August 2008. Retrieved 2008-08-04.
- "Leto signs Olympiakos loan deal". BBC Sport. 5 August 2008. Retrieved 2008-08-05.
- Eaton, Paul (6 August 2008). "Leto signs one year Olympiacos deal". Liverpoolfc.com. Retrieved 2014-08-21.
- "Leto completes Panathinaikos deal". BBC Sport. 1 July 2009. Retrieved 2009-07-01.
- "UEFA Champions League –". Uefa.com. Retrieved 2014-08-21.
- "Ergotelis and Panathinaikos at Super League soccer league". Soccervista.com. 22 August 2009. Retrieved 2014-08-21.
- Sapa – AFP. "Panathinaikos routs Ergotelis – SuperSport – Football". SuperSport. Retrieved 2011-12-19.
- "Torino Target Panathinaikos’ Sebastian Leto". Insidefutbol.com. Retrieved 2011-12-19.
- "Olympiakos beats Giannena 2–0 to extend league lead to 4 points". The Republic. Retrieved 2011-12-19.
- "ΠΑΝΑΘΗΝΑΪΚΟΣ – ΕΡΓΟΤΕΛΗΣ Δ.ΕΝ. | Superleague Ελλάδα". Superleaguegreece.net. Retrieved 2011-12-19.
- "Στατιστικά παικτών | Superleague Ελλάδα". Superleaguegreece.net. Retrieved 2011-12-19.
- "Βαθμολογία | Superleague Ελλάδα". Superleaguegreece.net. Retrieved 2014-08-21.
- "Transfer news: Catania sign ex-Liverpool striker Sebastian Leto". Sky Sports. 16 April 2013.
- "Επιστροφή του Λέτο στη Λανούς". www.sport24.gr. 30 January 2015.
- "Anorthosi want Leto, but he prefers to join Panathinaikos". www.sdna.gr. 30 January 2016.
- "Schelotto at SDNA: "Leto always wanted to return"". www.sdna.gr. 2 February 2016.
- Official Website (Greek and Spanish)
-  fan club
-  Best YouTube Tribute Video (For Season 09-10)
- Sebastián Leto career statistics at Soccerbase
- Sebastián Leto statistics (Spanish)
- Sebastián Leto player page on Lanús's official site (Spanish)
- UEFA Champions League profile
- LFChistory.net player profile