Daniel Altavilla (born September 8, 1992) is an American professional baseball pitcher in the Chicago White Sox organization.

He has previously played in Major League Baseball (MLB) for the Seattle Mariners, San Diego Padres, and Kansas City Royals.

After signing, Altavilla made his professional debut that same year with the Everett AquaSox and spent the whole season there, going 5–3 with a 4.36 ERA in 14 starts.

[11] In mid-March 2022, Altavilla was reported to have agreed to a two-year minor-league deal with the Boston Red Sox;[12] the signing was confirmed by the team on March 30.

In 2023, Altavilla made 8 appearance split between the rookie–level Florida Complex League Red Sox and High–A Greenville Drive, posting a cumulative 3.00 ERA with 7 strikeouts in 12.0 innings of work.

[14] On December 6, 2023, Altavilla signed a minor league contract with the Kansas City Royals that included an invitation to spring training.

[15] In 24 games for the Triple–A Omaha Storm Chasers, he recorded a 2.63 ERA with 30 strikeouts and 3 saves across 27+1⁄3 innings pitched.

[16] Two days later, he made his first start for the Royals, allowing six runs in the first inning before being relieved of duties after recording one out.