TAC is governed by a Board of Directors comprised of six officers and nine or more directors. The officers are elected to the key positions of President, Vice President (one each for eastern and western Canada), Treasurer and Secretary. The Immediate Past President is also an officer.

There are currently 12 directors. Five represent each of TAC's regional groups, and are supplemented by directors at large. Officers and directors typically hold their positions for a term of three years.

If you have an interest in being involved in TAC's administration as a director, you can contact any current officer or director. If you would like to be involved or would like to nominate a person as an officer, contact the TAC National Office at admin@tunnelcanada.ca.

• Officers
• Bruce Downing – President
• Erik Eberhardt – Immediate Past President
• Jason Mann – Vice President West
• André Rancourt – Vice President East
• Michelle Richards – Treasurer
• André Solecki – Secretary

• Directors
• Nichole Boultbee – Director, BC Region
• Mohammed Al-Bataineh – Director, Alberta
• Position vacant – Director, Manitoba & Prairies
• Dan Ifrim – Director, Ontario
• Jean Habimana – Director, Quebéc and Maritimes
• Andrew Caruana – Director
• Mark Diederichs – Director
• Connor Langford – Director
• Glen Mongillo – Director
• Leila Sunderani – Director
• Seamus Tynan – Director
• Dani Delaloye – Director
• Walter Milani – Director

• Past Presidents
• Erik Eberhardt: 2015 – 2021
• Rick Lovat: 2013 – 2014
• Rick Staples: 2009 – 2012
• Garry Stevenson: 2004 – 2008
• Brian Garrod: 2001 – 2004
• Bruce Ripley: 1999 – 2000
• Boro Lukajic: 1994 – 1998
• Kwan Yee Lo: 1990 – 1993
• Ray Benson: 1984 – 1989
• Branko Ladanyi: 1982 – 1983
• Don MacDonald: 1980 – 1981