Michael Vincent Nittoli (born November 11, 1990) is an American professional baseball pitcher in the Milwaukee Brewers organization.

He has previously played in Major League Baseball (MLB) for the Seattle Mariners, Philadelphia Phillies, New York Mets, Oakland Athletics, and Baltimore Orioles.

He split the 2016 season between the Single-A Clinton LumberKings and the High-A Bakersfield Blaze, accumulating a 5-5 record and 3.88 ERA in 40 appearances between the two teams.

After his release from the Mariners organization, Nittoli's father's friend referred him to former teammate George Tsamis, who was the manager of the St. Paul Saints of the American Association of Independent Professional Baseball at the time.

In 2018, Nittoli converted to a starter, and pitched to a 3-2 record and 3.21 ERA in 5 starts for the Saints, striking out 38 in 28.0 innings.

[3] On December 13, 2018, Nittoli signed a minor league contract with the Arizona Diamondbacks organization that included an invitation to Spring Training.

He was invited to Spring Training, but did not make the club and was assigned to the Triple-A Tacoma Rainiers to begin the season.

After posting a 3.50 ERA in 11 games with Tacoma, on June 18, 2021, Nittoli was selected to the 40-man roster and promoted to the major leagues for the first time.

On July 21, 2022, Nittoli signed a minor league contract with the Toronto Blue Jays organization.

[15] Nittoli made two scoreless appearances for Philadelphia, but spent the majority of his stint with the Triple–A Lehigh Valley IronPigs, where he logged a 7.94 ERA across five games.

On June 1, Nittoli exercised the opt-out clause in his contract, giving the Cubs 48 hours to add him to their 40-man roster or grant him his release.

[20] The following day, Nittoli was selected to the major league roster and optioned to the Triple-A Syracuse Mets.

[32] After three appearances for the Triple–A Norfolk Tides, the Orioles selected Nittoli's contract, adding him to their active roster on July 13.

[37] On September 30, 2024, Nittoli signed a minor league contract with the Milwaukee Brewers that included an invitation to spring training.