Nicolò Melli (born 26 January 1991) is an Italian professional basketball player for Fenerbahçe Beko of the Turkish Basketbol Süper Ligi (BSL) and the EuroLeague.

In May 2008, during the promotion semi-finals against Aurora Basket Jesi, he replaced injured starter Benjamin Ortner and contributed 16 points and 15 rebounds in a losing effort.

[8][9] During the off-season, the 17-year-old participated in the Reebok Eurocamp in Treviso but did not make an impression on observers (albeit playing against older players, sometimes by five years).

Scans revealed an anterior cruciate ligament injury on his left knee, requiring surgery and at least five months of rehabilitation though he would be able to continue his career.

[15] On the radar of strong sides for some time, Melli joined Armani Jeans Milano, of the elite domestic Serie A and European EuroLeague in July 2010, signing a four-year deal.

[19][23] An exception was his third successive participation in the December Italian league All-Star Game, in which he top-scored along with Milan teammate Alessandro Gentile (18 points), adding a game-best 10 rebounds.

[29] The first of those decisive contributions came in Milan's second EuroLeague game of the season against Žalgiris, where Melli scored a career-high 20 points, adding 9 rebounds and 2 steals in 25 minutes to earn a PIR of 28.

[29] Though he lad less impact further on as Milan reached the EuroLeague quarterfinals, Melli finished with respectable averages of 5.3 points, 4.3 rebounds, 0.8 assists and 0.9 steals in around 21 minutes in the competition.

[35] He cited Brose's strong pursuit of his services and their offering him a more important role in the side as motivation for the move abroad, adding that the presence of compatriots Andrea Trinchieri and Daniele Baiesi as head coach and GM respectively would facilitate his adaptation.

[37] Melli was named the EuroLeague Round 11 MVP, after scoring 27 points and grabbing 14 rebounds, in a 70–85 away victory over Maccabi Tel Aviv, on 8 December 2016.

[42] On 22 October 2019, Melli made his debut in NBA, coming off the bench in a 122–130 overtime loss to the Toronto Raptors with fourteen points, five rebounds and two assists.

[44] He was traded to the Dallas Mavericks on 26 March 2021, alongside JJ Redick in exchange for James Johnson and Wes Iwundu, in addition to a second-round draft-pick.

He had an off-game against Spain in the semi-final, grabbing 7 rebounds and scoring 9 points, but shooting 2 for 8 from the floor, and committing four fouls, as Italy had to make do with a silver medal.

[53][54] Melli made his full debut (discounting the All-Star Game) for the senior Italian team in August 2011, though he was rarely called up until 2013.