 1989 TFL Statewide League season

The 1989 TFL Statewide League premiership season was an Australian rules football competition staged across Tasmania, Australia over eighteen (18) roster rounds and six (6) finals series matches between 1 April and 16 September 1989.The League was known as the Cascade-Boags Statewide League under a dual commercial naming-rights sponsorship agreement with both Cascade Brewery in Hobart and Boag's Brewery in Launceston.