This is a list of the Leaders of the Opposition of the Yukon Territory, Canada, since 1978 when responsible government was given to the territory. Prior to 1978 the territory had a legislature which had a largely advisory role and no political parties or government leader. Instead powers were invested in a governing Commissioner appointed by the federal government.

Opposition Leaders

Liberal Leader

• Iain MacKay (1978-1981)

New Democratic Leader

• Tony Penikett (1981-1985)

Progressive Conservative Leader

• Willard Phelps (1985-1991)

Yukon Party Leader

• Daniel Lang (1991-1992)

New Democratic Leaders

• Tony Penikett (1992-1995)
• Piers McDonald (1995-1996)

Yukon Party Leader

• John Ostashek (1996-1999)

Liberal Party Leader

• Pat Duncan (1999-2000)

New Democratic Leaders

• Trevor Harding (2000-2000)
• Eric Fairclough (2001-2002)
• Todd Hardy (2002-2006)

Liberal Leader

• Arthur Mitchell (2006-2011)

New Democratic Leader

• Liz Hanson (2011-Present)