"Let the River Run" is a song written, composed, and performed by American singer-songwriter Carly Simon, and the theme to the 1988 Mike Nichols film Working Girl.

Carly Elisabeth Simon is an American musician, singer, songwriter, memoirist, and children's author. She rose to fame in the 1970s with a string of hit records; her 13 Top 40 U.S. hits include "Anticipation" (No. 13), "The Right Thing to Do" (No. 17), "Haven't Got Time for the Pain" (No. 14), "You Belong to Me" (No. 6), "Coming Around Again" (No. 18), and her four Gold-certified singles "You're So Vain" (No. 1), "Mockingbird", "Nobody Does It Better" (No. 2) from the 1977 James Bond film The Spy Who Loved Me, and "Jesse" (No. 11). She has authored two memoirs and five children's books.