As a redshirt senior in 2006–07, Landry led the Boilermakers in both rebounds and points. He began the season with three consecutive Big Ten Player of the Week honors, becoming the only player in Big Ten Conference history to do so. Landry was also one of only two players in the league to rank in the top five for both points and rebounds. Averaging 18.9 points per game, he ranked in the conference's top three with Alando Tucker of Wisconsin and Adam Haluska of Iowa. On March 10, 2007, Landry scored 24 points and made 9-of-16 shots going against Ohio State's Greg Oden in the Big Ten Tournament. He led the Boilermakers to the 2007 NCAA Tournament, where he recorded 18 points, 10 rebounds and four assists in his last game as a Boilermaker against the eventual champions, Florida, in the second round. Scoring in double figures in 33 of 34 games his senior season, he was awarded first-team All-Big Ten honors.