Martina Isidora Espejo Jeraldo (born 7 February 2007) is a Chilean rhythmic gymnast.

Martina debuted as a senior in 2023 when being incorporated into the national group, she took 7th place in the All-Around, 7th place with 5 hoops and 5th place with 3 ribbons & 2 balls at the Pan American Games.

[2] In October Espejo, along Antonia Gallegos, Annalena Ley, Isabel Lozano, Josefina Romero and Anneli Sepúlveda, won silver in the All-Around and with 5 hoops at the South American Championships.

[3] In 2024 the group won two silver medal (All-Around and 5 hoops) and one gold in the mixed event at the Pacific Rim in Cali.

[4][5] In June she won an historical bronze medal in the 5 hoops final along Antonia Gallegos, Annalena Ley, Isabel Lozano and Martina Valdez, at the Pan American Championships in Ciudad de Guatemala.