Daniel Altavilla (born September 8, 1992 in Elizabeth, PA) is an American professional baseball pitcher. He played in MLB for the Seattle Mariners from 2016 through 2020 and also for the San Diego Padres. He was drafted by the Seattle Mariners in the fifth round of the 2014 Major League Baseball Draft.

Dan was called up to the majors for the first time on August 27, 2016, and he made his major league debut that same night. He spent the remainder of the season with Seattle, compiling a 0.73 ERA in 12.1 innings pitched. He began 2017 with Seattle, but was sent down to the Tacoma Rainers in April.

He was recalled from Tacoma multiple times during the season before being recalled for the remainder of the season for September call-ups. In twenty games for Tacoma he was 2-0 with a 1.54 ERA, and in 41 games for Seattle, he was 1-1 with a 4.24 ERA. Altavilla was limited to just 22 appearances in 2018 and 17 in 2019 due to injury and inconsistency. On July 29, 2020, Dan recorded his first career save in a 10-7 win over the Los Angeles Angels.

On August 30, 2020, the Mariners traded Altavilla, Austin Nola, and Austin Adams to the San Diego Padres for Ty France, Taylor Trammell, Andrés Muñoz, and Luis Torrens. In 9 appearances in 2020 for San Diego, he was 1-1 with a 3.12 ERA.

(excerpted from Baseball Almanac, BR Bullpen & Wikipedia)