|Date of birth||19 April 1987|
|Place of birth||Bari, Italy|
|Height||1.78 m (5 ft 10 in)|
|2006–2007||→ Pro Vasto (loan)||0||(0)|
|2009–2010||→ Brindisi (loan)||27||(4)|
|2010–2011||→ Lucchese (loan)||27||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 2 October 2018|
Born in Bari, Italy, Piccinni started his career at hometown club A.S. Bari. After made his debut in the last rounds of 2005–06 Serie B (round 40 of 42 rounds season), he was loaned to Pro Vasto but returned in January 2007 for Bari youth team. He only played for Pro Vasto in 2006–07 Coppa Italia. He then sold to Noicattaro in co-ownership deal. In June 2009 he returned to Bari but in July left for Brindisi.
He failed to find a club to borrow him in 2011. He wore no.95 of Bari, which in recent years only players that excluded from the coach plan would wore "large" number in Bari. FIGC only allowed players to wear number from 1 to 99. Along with Conti (93), Langella (94), Statella (96), Rana (97) and Visconti (98), they were not part of the plan of Bari's first team. In January 2012, Piccinni left for Piacenza without a single appearance for Bari in 2011–12 Serie B season.
In July 2014 Piccinni signed with the Serie D side Fidelis Andria. After winning the championship, he renewed his contract with Fidelis Andria by signing a 1-year deal, with option for a 2nd year, for the 2015-16 Lega Pro season. At the end of the season, he signed a new 1-year deal for season 2016-17 with Fidelis Andria.
- "La Reggina promossa con fatica" (require login). La Gazzetta dello Sport (in Italian). 20 August 2006. Retrieved 11 November 2011.
- "Mercato, ceduti Galasso e Statella". AS Bari (in Italian). 10 July 2009. Archived from the original on 20 November 2010. Retrieved 11 November 2011.
- "Numerazione maglie stagione 2011-2012". AS Bari (in Italian). 11 August 2011. Archived from the original on 31 January 2016. Retrieved 11 November 2011.
- "Mercato: Piccinni al Piacenza" (in Italian). AS Bari. 11 January 2012. Archived from the original on 10 March 2014. Retrieved 25 August 2013.
- "Ufficiale l'ingaggio di Marco Piccinni" (in Italian). SS Barletta Calcio. 6 August 2012. Retrieved 25 August 2013.
- "Ufficiale: Marco Piccinni e Pasquale Turi sono giocatori del Chieti" (in Italian). SS Chieti Calcio. 13 August 2014. Archived from the original on 30 April 2014. Retrieved 25 August 2013.
- "MARCO PICCINNI È DEL MONOPOLI" (Press release) (in Italian). Monopoli. 2 September 2019.
- Marco Piccinni at TuttoCalciatori.net (in Italian)