Hoyt was introduced during a news conference Thursday.
The native of Hoxie, Kansas, began her coaching career as an assistant at Nevada before spending the past three seasons at Kansas State. While there, Hoyt helped to lure recruiting classes that pushed the Wildcats to 23 wins and an NCAA tournament appearance last season.
Hoyt takes over for Marsha Frese, who was fired after going 47-101 in five seasons with UMKC. The Roos were 10-19 in 2016-17.