Lindo averaged 1.7 points and 1.9 rebounds in just under seven minutes of game time as a sophomore.
The forward's decision leaves the Terps' frontcourt depth thin.
Aiken committed to Seton Hall, leaving the Terps with two open scholarships.
Smith earned first-team all-Big Ten honors after averaging 15.5 points and 10.5 rebounds this season.
A projection from Joe Lunardi has the Terps near the bubble.
Lindo is the third front court player to transfer away from the Terps, following Makhel and Makhi Mitchell.
Smith is the first Terps player to make an AP All-American team since Greivis Vasquez in 2010.
“I don’t think you could’ve written it any better,” Turgeon said. “It was a great ending.”
The Big Ten and NCAA tournaments were cancelled due to the coronavirus outbreak.
The Big 12, ACC, SEC and Pac-12, among others, have all also canceled their conference tournaments.