MFC 23: Unstoppable was a mixed martial arts event held by the Maximum Fighting Championship (MFC) on December 4th, 2009 at the River Cree Resort and Casino in Enoch, Alberta. The main event featured former UFC contender Thales Leites taking on fellow UFC veteran Dean Lister. The co-main event featured Jason MacDonald taking on Solomon Hutcherson. The event aired live on HDNet.