2024–25 Big Ten Conference men's basketball season

The 2024–25 Big Ten men's basketball season was for the Big Ten Conference in the 2024–25 NCAA Division I men's basketball season. The basketball teams began practicing in October 2024, followed by the start of the season in November 2024. The regular season concluded on March 9, 2025.

This was the conference's first season with 18 teams, as four schools joined the conference in 2024: Oregon, UCLA, USC, and Washington. Each team played 20 regular season conference games, seven opponents only at home, seven others only on the road, and a home-and-home with three opposing schools.

With a loss by Michigan on March 5, 2025, Michigan State secured at least a share of the Big Ten regular season championship, their first since 2020. On March 6, the Spartans secured the outright regular season championship with a win over Iowa, their first outright championship since 2018. Purdue point guard Braden Smith was named the Big Ten Player of the Year and Michigan State head coach Tom Izzo was named the Big Ten Coach of the Year.

The Big Ten tournament was held from March 12 through March 16 at Gainbridge Fieldhouse in Indianapolis, Indiana. Michigan defeated Wisconsin to win the school's fourth Big Ten tournament championship.

Michigan received the conference's automatic NCAA tournament bid, in addition Illinois, Maryland, Michigan State, Oregon, Purdue, Wisconsin, and UCLA received at-large bids to the tournament. In the first round the Big Ten went 8–0, setting an NCAA record for the most wins without a loss by any conference in any round in the history of the tournament. Maryland, Michigan, Michigan State and Purdue advanced to the Sweet Sixteen. Only Michigan State advanced to the Elite Eight before losing, extending the conference's national championship drought to 25 years.

On March 15, 2024, Michigan fired head coach Juwan Howard after finishing the 2023–24 season with an 8–24 record. On March 24, the school named Florida Atlantic head coach Dusty May the team's new head coach.

On February 15, Ohio State fired Chris Holtmann. The school named associate head coach Jake Diebler the team's interim head coach. Following the completion of the Big Ten Tournament, the school named Diebler the team's new head coach after finishing the season with a 6–2 record as interim coach.

On April 1, USC head coach Andy Enfield left the school to take the head coaching position at SMU. On April 4, the school named Arkansas head coach Eric Musselman the team's new head coach.

On March 8, Washington fired head coach Mike Hopkins after seven seasons. On March 25, the school named Utah State head coach Danny Sprinkle the team's new head coach.

Notes:

• All records, appearances, titles, etc. are from time with current school only.
• Year at school includes 2024–25 season.
• Overall and Big Ten records are from time at current school only and are through the beginning of the season.

The Big Ten Media poll was released on October 2, 2024.

A select media panel named a preseason All-Big Ten team and player of the year.

Below is a table of notable midseason watch lists.

Throughout the conference regular season, the Big Ten offices will name one or two players of the week and one or two freshmen of the week each Monday.

Of the 18 Big Ten teams, 13 will participate in early season tournaments.

This table summarizes the head-to-head results between teams in conference play. Each team is scheduled to play 20 conference games with at least one game against each opponent.

Final conference records

On March 11, 2025, the Big Ten announced most of its conference awards.

Although the conference grew by four teams, it has allotted only one additional spot for the conference tournament – meaning three teams will not qualify for the tournament. The tournament will still be over five days, with double byes for the top four seeds, and single byes for the next five seeds.

No Big Ten teams participated in 2025.