Rájec-Jestřebí (German: Raitz-Jestreb) is a town in Blansko District in the South Moravian Region of the Czech Republic.

The highest point is the hill Spálená hora at 529 m (1,736 ft) above sea level.

The first written mention of Rájec is in a deed of Olomouc bishop Jindřich Zdík from 1141.

There were two 13th-century castles that were probably destroyed in the struggles between Margrave Jobst of Moravia and his brother Prokop.

After the male followers of the Drnovský family became extinct in 1618, it was owned by Johanna Drnovská, who married Styrian count Georg Ehrenreich of Roggendorf.