One assault happened just before 7 p.m. and the other at 9:20 p.m. on Saturday.
University police say the same man came up behind the victims and touched them inappropriately.
He's described as a white man, between 20 and 30 years old with a mustache, wearing a black hoodie and black pants.
He left the scene of both incidents riding on a bicycle.
The victims, who are students, were not harmed.
