Alexander David Kirilloff (born November 9, 1997) is an American former professional baseball first baseman and outfielder.

[2] During the summer of 2015 he played in the Perfect Game All-American Classic at Petco Park and won the event's home run derby.

[5][6][7] Kirilloff spent his first professional season with the Elizabethton Twins where he hit .306/.341/.454 with seven home runs, nine doubles, and 33 RBI in 55 games,[8] which earned him Appalachian League MVP honors.

His season was cut short with a partial ligament tear in his elbow, and he tried to avoid surgery, receiving platelet-rich plasma therapy.

[13] The Twins selected Kirilloff's contract on September 29, 2020, ahead of the 2020 American League Wild Card Series against the Houston Astros.

[21] On October 31, 2024, Kirilloff announced his retirement from professional baseball on social media, citing a decrease in passion for the game and his struggles with injury as reasons for his departure.