Travis Steven Mack (born April 15, 1983) is an American NASCAR crew chief for Legacy Motor Club of their No.

42 Toyota Camry XSE in the NASCAR Cup Series driven by John Hunter Nemechek for the 2025 season.

After graduating from Louisville Male High School and the University of Louisville, Mack began his career as a mechanic on Frank Kimmel's ARCA team, Clement Racing, winning three championships with him, before joining Hendrick Motorsports in 2004 as a shock specialist and front-end mechanic.

95 car int the Cup Series, which was driven by Kasey Kahne, who Mack worked alongside at Hendrick the previous year.

Annett had struggled that year and in 2017 compared to his teammates under crew chief Jason Stockert, who was reassigned to another job at JRM.

[6] In 2021, Mack left JRM to return to the Cup Series as the crew chief for the new Trackhouse Racing on their No.

Mack would also become the technical director for the entire Kaulig team in addition to his crew chief responsibilities.