Ryan Curran Arcidiacono (/ɑːrˌtʃiːdiˈækənoʊ/ ar-CHEE-dee-AK-ə-noh;[1] born March 26, 1994) is an American professional basketball player for the Windy City Bulls of the NBA G League.

Young Arcidiacono would often practice shooting jump shots and hitting layups on the small hoop before progressing to an actual basketball court.

When he was in 7th grade at a basketball camp, Villanova coach Jay Wright said he would one day play for the Wildcats.

In a playoff game against Bartram High School, he tallied a triple-double of 26 points, 10 rebounds, and 10 assists.

[9] At the end of his sophomore season, Arcidiacono traveled with his AAU team, the PA Playaz, to North Carolina for the Bob Gibbons Tournament of Champions.

[6] As a junior, Arcidiacono guided Neshaminy to a 22–7 record while averaging 20.4 points, 5.6 rebounds, 5.0 assists, and 2.2 steals.

In May 2011, while attending a basketball camp at the Deron Williams Academy in Chicago, Arcidiacono complained of poor mobility and soreness.

[7] Arcidiacono finished his career at Neshaminy High School as the program's all-time leading scorer.

[5] Arcidiacono garnered his first Big East rookie of the week honors on November 18, after an 18-point six-assist performance in an overtime win against Purdue.

[17] In the January 26 contest against third-ranked Syracuse, Arcidiacono made a 3-pointer with 2.2 seconds remaining in regulation to tie the game at 61.

[20] Arcidiacono hit a 3-pointer with 10.1 seconds left in a November 29 matchup against Kansas despite not making a shot until that point.

With 3.1 seconds left in double overtime, Arcidiacono completed a three-point play to help the Wildcats to an 82–79 victory.

[31] In the semifinals of the Big East tournament, Villanova defeated Providence 63–61 after Arcidiacono hit a pair of free throws with 3.1 seconds remaining.

He shared Big East Player of the Year honors with Providence guard Kris Dunn, feeling "kind of shocked" about the selection.

[43] Arcidiacono helped lead Villanova to the 2016 NCAA Division I men's basketball championship, where he had the game-winning assist to Kris Jenkins in the title game against North Carolina, and was named Most Outstanding Player for his performance.

[44] Arcidiacono averaged 12.5 points and 4.2 rebounds per game as a senior, shooting 39.4 percent from three-point range.

[49] Seven days later, he was acquired by the Austin Spurs of the NBA Development League as an affiliate of San Antonio.

[52] On July 25, 2017, Arcidiacono signed a two-way contract with the Chicago Bulls,[53] the team he played with the 2017 NBA Summer League in Las Vegas[54] As a result, he would split time between Chicago and their G League affiliate, the Windy City Bulls throughout the season, with Arcidiacono spending most of his time out in the Windy City.

After playing sparingly with Chicago, Arcidiacono averaged 13.8 points, 5 rebounds, and 8.6 assists per game with Windy City.

On November 26, 2018, Arcidiacono scored a career-high 22 points with four rebounds, two assists and two steals in a 107–108 loss to the San Antonio Spurs.

[71] On September 15, 2023, Arcidiacono signed with the New York Knicks, returning to the franchise for a second stint.

[73] On February 8, 2024, Arcidiacono, Malachi Flynn, Evan Fournier, Quentin Grimes and two second-round picks were traded to the Detroit Pistons in exchange for Bojan Bogdanović and Alec Burks.

[75] On February 23, 2024, Arcidiacono joined the Windy City Bulls for the rest of the 2023–24 NBA G League season.

[80] However, he was unable to represent Italy in official competition, as his claim to Italian citizenship by Jus sanguinis was denied because one of his ancestors had previously renounced it.