The 2019–20 Oregon Ducks men's basketball team represented the University of Oregon during the 2019–20 NCAA Division I men's basketball season. The Ducks, led by 10th-year head coach Dana Altman, played their home games at Matthew Knight Arena as members of the Pac–12 Conference. They finished the season 24–7, 13–5 in Pac-12 play to win the regular season Pac-12 championship. They were set to take on rival Oregon State in the quarterfinals of the Pac-12 tournament. However, the Pac-12 Tournament, along with all postseason tournaments, was cancelled amid the COVID-19 pandemic.