Personal
- Son of Keith and Chantal Tkachuk
- Father, Keith played in the NHL for 19 years, starred in four Olympics for the U.S. and was inducted into the U.S. Hockey Hall of Fame in 2011
- Has one brother, Matthew and one sister, Taryn
- Brother, Matthew, played for the NTDP from 2013-15 and currently plays for the Florida Panthers (NHL)
- Cousin, Jimmy Hayes, skated for the NTDP from 2006-08 and played in the NHL
- Cousin, Kevin Hayes, plays for the NHL's Pittsburgh Penguins
- Cousin, Casey Fitzgerald, was captain of Boston College and was member of gold medal-winning 2017 U.S. National Junior Team. His brother, Ryan Fitzgerald, also skated at Boston College and is in the Boston Bruins organization. Casey played at the NTDP from 2013-15.