The AP Third-Team All-American was one of four players to leave the Terps via the transfer portal on Tuesday.
Mikesell earned All-Big Ten honors in both her seasons with the Terps.
Katie Benzan and Chloe Bibby will join the Terps next season.
Austin averaged 12 points and 6.8 rebounds per game this past season while Owens did not play.
Owusu and Jones combined for 35 points and 16 rebounds in the title game against Ohio State.
Diamond Miller finished with a team-high 15 points.
Forward Kaila Charles was named to the first team, and guard Blair Watson was named to the All-Defensive team.
It's the Terps' fifth Big Ten regular-season title in the last six years.
“I’m proud of how she’s playing and we’re going to need her to continue that.”
Jones is averaging 16 points and 8.2 rebounds on 75 percent shooting in her past five games.