The 2018–19 Oregon Ducks men's basketball team represented the University of Oregon during the 2018–19 NCAA Division I men's basketball season.

The Ducks, led by ninth-year head coach Dana Altman, played their home games at Matthew Knight Arena as members of the Pac–12 Conference.

1 seed Washington and receiving the conference's automatic bid to the NCAA tournament.

5 seed Wisconsin in the first round, beat UC Irvine in the Second Round before losing in the Sweet Sixteen to Virginia.

They received an invitation to the National Invitation Tournament, where they defeated Rider in the first round before losing to Marquette in the second round.