The constellation Leo is made up of many stars, but some of the most prominent ones include:

* Regulus: The brightest star in Leo, a blue-white star marking the heart of the lion.

* Denebola: A white star marking the tail of the lion.

* Algieba: A double star (two stars orbiting each other) that appears as a single star to the naked eye, marking the mane of the lion.

* Zosma: A blue-white star in Leo's hindquarters.

* Chort: A red giant star in Leo's hindquarters.

* Thuban: A white star near the lion's head.

These are just a few of the stars that make up the constellation Leo. There are many other stars, some visible to the naked eye and others only visible through telescopes.