Darryl Morsell scored 12 for the Terrapins (12-2, 2-1 Big Ten), who climbed to No. 3 in mid-December before losing successive games to Penn State and Seton Hall. An unimpressive win over Bryant followed on Dec. 29, but Maryland opened the New Year in dominant fashion against the Hoosiers (11-3, 1-2).
The Terrapins turned a three-point game into a blowout with second-half runs of 8-0, 11-0 and 12-0.
Indiana trailed 71-41 with 3:44 left before using a late surge to avoid its lowest point total of the season.
Devonte Green scored 18 for the Hoosiers, with most of those points coming in the final meaningless minutes. Indiana 6-foot-11 center Joey Brunk had nine points and 10 rebounds, but the Hoosiers could not supplement his inside play with jumpers from the outside.
Indiana went 4 for 18 beyond the arc, missing 12 of its initial 13 attempts, and shot only 36 percent from the floor.
Minutes later, Cowan drilled a 3-pointer and blocked a shot on the other end to set up a layup by Smith. Scott then turned an Indiana turnover into a fast-break dunk and Wiggins made two layups to cap the 11-0 run and make it 57-38 with 8 minutes to go.
The Terrapins got nine points from Morsell and eight from Smith in taking a 28-20 halftime lead.
Maryland missed 12 of its first 15 shots and trailed 16-11 before rattling off 11 straight points to take control. Indiana made only one basket over the final nine minutes of its lowest-scoring half of the season.
The Terrapins should be headed back up in the AP poll after this impressive blowout.
The Terrapins are 4-0 against Indiana at home since joining the Big Ten in 2014-15. Maryland trails the series 7-8 but won the most significant match-up, beating the Hoosiers 64-52 in the 2002 NCAA title game.
Indiana: Hosts Northwestern on Wednesday night, a series the Hoosiers lead 91-27.
Maryland: Hosts No. 5 Ohio State on Tuesday night. The Buckeyes have dropped two in a row following an 11-1 start.