|Date of birth||11 September 1963|
|Place of birth||Florence, Italy|
|Height||1.85 m (6 ft 1 in)|
|* Senior club appearances and goals counted for the domestic league only|
Baroni started his career with Fiorentina, and reached his football peaks during his time at Napoli, where he played his first seasons as a Serie A regular, winning an Italian championship title (scoring the title-clinching goal on the last day of the season against Lazio) and a Supercoppa Italiana title in 1990. He left Napoli in 1991 to join Bologna, and then left the club due to its financial issues; after a short spell at Serie C2 club Poggibonsi, he then joined Serie B side Ancona, and moved to Verona in 1996, where he enjoyed his last appearances in the Italian top flight. He retired in 2000 after two seasons with hometown Serie C2 club Rondinella.
After his retired from playing football, Baroni was immediately appointed head coach of Rondinella in 2000, and then served with a handful of other Serie C2 clubs such as Montevarchi, Carrarese and F.C. Südtirol. In 2007, he was appointed as new head coach of Serie C1 club Ancona, but failed to complete his season with the biancorossi, and later accepted a youth coach offer from Serie A club Siena. During the 2008–09 season, Baroni guided the Siena Primavera (under-19) team to the Campionato Nazionale Primavera final, which they eventually lost to Palermo.
On 29 October 2009, Siena appointed Baroni as new head coach in order to replace dismissed boss Marco Giampaolo. His reign as first team coach however lasted only three weeks, as he was stripped of his managerial duties on 23 November following a home defeat to Atalanta, with Alberto Malesani being appointed at his place, and Baroni being re-appointed back at his previous role of under-19 team coach.
In July 2011, he was appointed as youth team coach for Juventus. He left the role in July 2013 to become new head coach of Serie B club Virtus Lanciano. After an impressive start and a less successful end of season with the club ending in tenth place, Baroni and Virtus Lanciano mutually parted ways. He was successively named new head coach of another Serie B team, Pescara, for the 2014–15 season. After a lacklustre season, with Pescara on ninth place and one point out of the promotion playoff zone, Baroni was sacked on 16 May 2015 with one game remaining, being replaced by youth coach Massimo Oddo.
On 23 June, Baroni became the head coach of Novara Calcio. He guided the club to a promotion playoff spot, but was not confirmed by the club for the new season and was successively appointed as new head coach of freshly-promoted Serie B club Benevento. In his first season in charge, he led Benevento to fourth place in the regular season and to ultimately win the promotion playoffs after winning a two-legged final against Carpi, thus bringing the Campanian club to Serie A for its first time ever. He was confirmed as Benevento head coach for the 2017–18 Serie A season. He was sacked on 23 October 2017.
- Barreca, Vincenzo (August 22, 1999). "Gli scudetti dimenticati. Napoli 1989-90" [The forgotten scudettos. Napoli 1989-90]. Calcio 2000 (in Italian). Action Group S.r.l. pp. 134–136.
- "Esonerato Giampaolo, squadra a Baroni" (in Italian). AC Siena. 29 October 2009. Archived from the original on 3 November 2009. Retrieved 29 October 2009.
- "Raggiunto l'accordo con Alberto Malesani" (in Italian). AC Siena. 23 November 2009. Retrieved 23 November 2009.[dead link]
- "Baroni torna alla Primavera" (in Italian). AC Siena. 23 November 2009. Retrieved 23 November 2009.[dead link]
- "UFFICIALE: Cremonese, Baroni nuovo allenatore" (in Italian). TuttoMercatoWeb. 22 November 2010. Retrieved 22 June 2010.
- "Marco Baroni nuovo allenatore della Virtus Lanciano: Trovato l'accordo con il tecnico toscano" [Marco Baroni new Virtus Lanciano head coach: agreement completed with the Tuscan technician] (in Italian). SS Virtus Lanciano 1924. 1 July 2013. Retrieved 6 July 2013.
- "UFFICIALE: Lanciano, rescisso consensualmente il contratto di Baroni" (in Italian). TuttoMercatoWeb. 13 June 2014. Retrieved 13 June 2014.
- "Marco Baroni è l'allenatore del Pescara" (in Italian). Delfino Pescara 1936. 28 June 2014. Archived from the original on 18 November 2015. Retrieved 19 July 2014.
- "Comunicato Stampa: Baroni sollevato dall'incarico" (in Italian). Pescara Calcio. 16 May 2015. Archived from the original on 18 May 2015. Retrieved 23 May 2015.
- "UFFICIALE: MARCO BARONI E' IL NUOVO ALLENATORE DEL NOVARA" (in Italian). Novara Calcio. 23 June 2015. Retrieved 19 September 2015.
- "Official: Frosinone appoint Baroni". Football Italia. 19 December 2018.
- "Baroni: "Chiesa ha davanti una carriera da top. Mio figlio Riccardo…"" (in Italian). Fiorentina.it. 4 February 2017.