Mackenzie Grace Allessie (born March 6, 2001) is an American field hockey player.

[1] Allessie was born in Mount Joy, Pennsylvania.

[2] Allessie has been a member of the United States junior teams since 2016, when she was just 15 years of age.

[3] In January 2019, Allessie made her senior international debut during a test series against Chile.

[4] Since her debut, Allessie has been a regular inclusion in the United States team, most recently appearing in the 2019 FIH Pro League.