|Date of birth||16 October 1978|
|Place of birth||Ivrea, Italy|
|Height||1.82 m (5 ft 11 1⁄2 in)|
|Playing position||Right back|
|1999–2001||→ Vicenza (loan)||47||(3)|
|2003||→ Fiorentina (loan)||15||(0)|
|2004||→ Reggina (loan)||14||(0)|
|2005–2006||→ Ascoli (loan)||31||(3)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 1 August 2014.
† Appearances (Goals).
He joined Torino in summer 1997, and played 12 games in two Serie B seasons. After Torino won promotion to Serie A, he was farmed to Vicenza, where he won promotion again. He made his Serie A debut during on loan at Vicenza on 1 October 2000, in a match against AC Milan. Comotto returned to Torino in summer 2001, and played his first Serie A season for Torino.
Torino relegated in summer 2003, and Comotto successively played for Reggina (Serie A) and Fiorentina (Serie B), and then returned to Torino in 2004. Comotto helped the team win promotion back to Serie A again.
Roma and loans
However, because of the cancellation of Torino because of economic troubles, Comotto was released for free in the summer of 2005. Thus, he signed a 3-years long contract with AS Roma, and loaned him to Ascoli until the end of the 2005–06 season at the same day and loaned by to Turin in summer 2006. Turin bought back 50% ownership in January 2007 for €1.05 million  and Torino got full ownership in June 2007 for another € 1.525M.
Comotto captained Torino in 2007–08 season, but his season came to early end at March 2008 due to injuries.
On 5 July 2008 Comotto signed for Serie A club Fiorentina. A bad injury excluded Comotto from the Champions league squad list for 2008. He made his Viola debut on September 21, 2008 in Fiorentina-Bologna, which finished 1–0. He also made his debut in the Champions League in the first leg of the qualifiers against Sporting Lisbon on August 18, 2009 in the Stadium Jose Alvalade. He was the starting right-back in 2008–09 and 2009–10 season, but lost his place to Lorenzo De Silvestri in 2010–11 Serie A season. That season he only started 16 times and only re-picked by coach in October after he criticized his squad is a reason for bad results.
- Serie B Runner-up: 1999, 2005
- "Gianluca Comotto è un giocatore del Cesena" (in Italian). Cesena. 9 July 2011. Retrieved 9 July 2011.
- "Calciomercato Perugia, ingaggiato il difensore Gianluca Comotto" (in Italian). Perugia. 8 July 2013. Retrieved 11 August 2013.
- (Italian) Player stats