Cynthia Weil (October 18, 1940 – June 1, 2023) was an American songwriter who wrote many songs together with her husband Barry Mann.

Weil and her husband, both based at the Brill Building, were instrumental in shaping the sound of rock and roll in the 1960s, alongside other luminaries such as Carole King, Burt Bacharach, and Neil Diamond.

[3][4][5] Her father was Morris Weil, a furniture store owner and the son of Lithuanian-Jewish immigrants, and her mother was Dorothy Mendez, who grew up in a Sephardic Jewish family in Brooklyn.

[4] Weil trained as an actress and dancer, studying theater at Sarah Lawrence College, but soon demonstrated a songwriting ability that led to her collaboration with Barry Mann, whom she married in August 1961.

With Weil writing the words and Mann the music, they came up with a number of songs that addressed such serious subjects as racial and economic divides[,] 'Uptown', ...and the difficult reality of making it in the big city ('On Broadway').