Chi Upsilon Sigma (ΧΥΣ) ("Women of Wisdom")—official name is Corazones Unidos Siempre Chi Upsilon Sigma National Latin Sorority, Inc. (Hearts United Always)—is a Latin-based Greek letter intercollegiate sorority.

The seven founding mothers are: Due to the shifts in the cultural and political arenas, the late 1970s and early 1980s was a thriving time for the Latino community in the Northeastern United States.

Corazones Unidos Siempre/Chi Upsilon Sigma Sorority, Inc. was formed to challenge inequality, poor funding, and inferior quality of life for Latino students.

Corazones Unidos Siempre was formed with three goals, to provide service, to encourage communication, and develop awareness amongst the community.

[3] The sorority joined the National Association of Latino Fraternal Organizations (NALFO) on October 14, 2000.