Nancy Ames (born 1937 as Nancy Hamilton Alfaro) is an American folk singer and songwriter. She regularly appeared on the American version of the television series That Was the Week That Was. The "TW3 Girl", as she was known, sang the show theme and special material.

She was born in Washington, DC. She is the granddaughter of Ricardo Joaquín Alfaro (1882–1971), who served as President of Panama from 1931 to 1932.

A folk singer with a partially Latin repertoire, she was signed to Liberty Records; her first album was entitled "Cu Cu Rru Cu Cu La Paloma". She broke the top 100 twice in 1966; "He Wore the Green Beret," her answer song to Staff Sgt. Barry Sadler's "Ballad of the Green Berets," hit number 89, and later in the year "Cry Softly" also placed in the charts.

Ames has resided in Houston, Texas since 1972. She had a TV show which aired on KPRC-TV Channel 2 (the Houston area NBC affiliate) from 1972-77. She and her husband Danny Ward are the co-founders of Ward and Ames Special Events. She is listed as the co-writer of the theme song to The Smothers Brothers Comedy Hour with Mason Williams per Williams' own 1969 LP entitled "Music by Mason Williams".