|Date of birth||20 June 1980|
|Place of birth||Cirié, Italy|
|Height||1.77 m (5 ft 9 1⁄2 in)|
|Playing position||Right Winger|
|1999–2000||→ Salernitana (loan)||24||(0)|
|2000–2002||→ Torino (loan)||19||(1)|
|2002||→ Ternana (loan)||13||(0)|
|2002–2003||→ Vicenza (loan)||31||(3)|
* Senior club appearances and goals counted for the domestic league only and correct as of 16 May 2010.
Semioli, a Piedmontese who made his professional debut playing for Torino Calcio in 1998–99. He then signed by Internazionale in a co-ownership deal for 5.5 billion lire as part of Fabio Galante transfer, along with Riccardo Fissore. He spent seasons on loan to Salernitana, Ternana and Vicenza and loan back to Torino.
In June 2003 Internazionale bought the remain half from Torino, and then joint-owned with A.C. ChievoVerona in July for €1.05 million, as part of the loan fee of Luciano. Chievo got full ownership in June 2005 for €500,000 as part of Júlio César's deal.
He became one of the most representative players for Chievo, and was one of the main protagonists of the very impressive 2005–06 season contributing 2 goals and 12 assists. One of the top assisters that season.
He scored Fiorentina's first UEFA Cup goal against FC Groningen and scored crucial goals against Atalanta and Parma which allowed Fiorentina to surpass AC Milan for the final Champions League spot. In the 2008–09 season Semioli was widely believed to be on his way out because of the tactic change and the arrival of players such as Stevan Jovetic. However after season ending injuries to Adrian Mutu and Mario Santana, Semioli found his way back onto the first team, and was a valuable asset to Gilardino, providing him with many crosses and being a terror on the wings.
Following the arrival of Marco Marchionni to Fiorentina, in July 2009, for €4.5 million, it was confirmed that Semioli was transferred to Sampdoria an a four-year deal, for €4 million fee in August, rejoining his former coach at Chievo, Luigi Delneri. Franco scored his first goal 13 February with a header against his former team Fiorentina which gave Bluecerchiati the lead.
After three years at Sampdoria, Semioli was transferred to former club Vicenza in a deal that included Sampdoria team-mates Marco Padalino and Zsolt Laczkó moving in the same direction, all for free.
In the 2006 FIFA World Cup he was one of the four backup players for the 23-men main squad to step in for any possible injuries. However he was never called up and thus never received a winners medal. On 16 August 2006, Semioli made his Italy national team debut against Croatia.
Semioli was recalled to the Italy squad for the final Euro 2008 qualifier with Scotland.
- FC Internazionale Milano SpA Report and Accounts on 30 June 2002 (Italian)
- "Galante Ceduto al Toro di Simoni" (in Italian). inter.it. 20 June 2000. Retrieved 2010-01-03.
- "Transfer Market: Co-ownership Issues Resolved". inter.it. 25 June 2003. Retrieved 2010-01-03.
- FC Internazionale Milano SpA Report and Accounts on 30 June 2004 (Italian), CCIAA
- "Luciano Signs for Inter". inter.it. 8 July 2003. Retrieved 2010-01-03.
- FC Internazionale Milano SpA Report and Accounts on 30 June 2005 (Italian), CCIAA
- "Co-ownership Deals Resolved 1". inter.it. 27 June 2005. Retrieved 2010-01-03.
- ACF Fiorentina SpA Report and Accounts on 31 December 2007 (Italian), CCIAA
- "Acquisito Semioli" (in Italian). ACF Fiorentina. 19 July 2007. Retrieved 2007-07-20.
- "Fiorentina: acquistato Semioli" (in Italian). Rai sport. 19 July 2007. Retrieved 2007-08-02.[dead link]
- "Agreements with ACF Fiorentina S.p.A." (PDF). Juventus FC. 15 July 2009. Retrieved 3 November 2012.
- ACF Fiorentina SpA Report and Accounts on 31 December 2009 (Italian)
- UC Sampdoria SpA Report and Accounts on 31 December 2009 (Italian)
- "Nuova linfa sulla destra: ecco "Franchino" Semioli" (in Italian). U.C. Sampdoria. 19 August 2009. Retrieved 3 November 2012.
- "Laczko, Padalino e Semioli passano al Vicenza" (in Italian). UC Sampdoria. 7 September 2012. Retrieved 30 September 2013.
- UC Sampdoria "bilancio" (Financial Report and Accounts) on 31 December 2012 (Italian), Require purchase in CCIAA
- "Comunicato Stampa" [Press Release] (PDF). FIGC (in Italian). 15 May 2006. Retrieved 28 August 2011.