Humberside Collegiate Institute (also known as Humberside CI, HCI, or Humberside), formerly known as Toronto Junction High School and Toronto Junction Collegiate Institute is a public high school located in Toronto, Ontario, Canada. It serves the Bloor West Village, Baby Point, High Park North and Junction neighbourhoods. Prior to 1998, it was within the Toronto Board of Education (TBE).

Humberside was established in 1892 and has an academic program for students in grades 9 through 12. In addition to the regular curriculum, the school has a strong music program, as well as an Extended French and French Immersion program. It is a semestered school, meaning that the students take eight classes in two semesters. The school was previously operated under a full-year, non-semestered schedule. This changed following the COVID-19 pandemic.

The motto of the school is "Felix qui potuit rerum cognoscere causas", a Latin phrase from Virgil's work Georgics, meaning "Happy is the person who has been able to learn the reasons for things".