"No More Tears (Enough Is Enough)" is a 1979 song recorded by American singers Barbra Streisand and Donna Summer. It was written by Paul Jabara and Bruce Roberts, and produced by Giorgio Moroder and Gary Klein. The song was recorded for Streisand's Wet album and also as a new track for Summer's compilation double album On the Radio: Greatest Hits Volumes I & II. The full-length version was found on Streisand's album, while a longer 11-minute edit (the 12" version) was featured on Summer's album. The longer 12" version features additional production by frequent collaborator Harold Faltermeyer, and incorporates a harder rock edge.

The single was released on both Casablanca Records (Summer's label) and Columbia Records (Streisand's label) and sales of the two were amalgamated. The versions on the two 7" singles differed slightly however, with different mixes and slightly different background vocal arrangements. The formats differed between nations—in the UK for example, the song was only released on 7" by Casablanca, and 12" (the extended version from the On The Radio album) by Columbia.^{[citation needed]}

Although the sales of the two labels' releases were amalgamated, both the 7" and the 12" were certified Gold by the RIAA in early 1980. The 7" single was eventually certified Platinum, signifying sales of two million US copies.

Bowing on the Hot 100 at number 59 on 20 October 1979, the single went to number one on the Billboard Hot 100 on 24 November – 1 December 1979 (making it the first duet by two women to top the Billboard Hot 100 and becoming both singers' fourth chart-topping single in the US, as well as Summer's final) and number one for four weeks on the disco chart.^[1] "No More Tears" was also a big international hit, and made the top three in both Canada and the UK.^[2]

The song’s original title was simply “Enough is Enough,” which didn’t fit the theme of Streisand’s Wet album, in which every song had something to do with water. So the songwriters changed the title and added the introduction: “It’s raining, it’s pouring, my love life is boring me to tears.”^[3]

After recording "No More Tears" Summer and Streisand did not perform the song together live, although Summer did sing the song in concert with other female performers, including Tina Arena and Summer's sister Mary Gaines Bernard.^{[citation needed]} Streisand included the song as part of her 2012 Barbra Live concert tour (released as Back to Brooklyn), where she discussed Summer's recent passing and how she wished Summer were alive so they could sing the song together.

A later remix released as "Enough Is Enough 2017" climbed to #3 on the US Dance Club chart.^[4]

• Barbra Streisand and Donna Summer – vocals
• Greg Mathieson – acoustic and electric piano
• Neil Stubenhaus – bass
• James Gadson – drums
• Jay Graydon and Jeff Baxter – guitar
• Julia Waters, Maxine Waters, Luther Waters – background vocals

Comedian Eddie Murphy recorded a parody version of the song as it might be performed by exercise guru Richard Simmons and Our Gang actor Billie "Buckwheat" Thomas. The song appears on Murphy's 1982 self-titled comedy album.^[41]

On the UPN's series Half & Half, the song was performed in an episode by Phyllis (Telma Hopkins) and Big Dee Dee (Valarie Pettitord).

• In 2008, Serbian pop-folk singer Jelena Karleuša used the 'enough is enough' line on her album JK Revolution. It can be heard in the song "Mala (TeatroMix)".^{[citation needed]}
• An interpretation of "No More Tears" begins "Rainy Dayz" by Raekwon and Ghostface Killah.^{[citation needed]}

In 1994, American singers Kym Mazelle and Jocelyn Brown released a cover of "No More Tears (Enough Is Enough)". The song was produced by Mike Stock and Matt Aitken, and peaked at number 13 in its second week at the UK Singles Chart, on June 12. It also charted in Australia, Belgium and Ireland, where it reached number 19. The single marked the first collaboration between producers Mike Stock and Matt Aitken since the split of the famous '80s production triumvirate with Pete Waterman. The idea to record the Streisand/Summer song came from the head of the Bell label Simon Cowell. Stock told in a 1994 interview, "The idea was to make something more camp and outrageous than k.d. lang and Andy Bell's recent version, which we found a bit drippy."^[42]

On August 12, 2008, JMCA issued the 7-track digital EP No More Tears (Enough Is Enough) by Amber ("This Is Your Night", "If You Could Read My Mind", "Sexual (Li Da Di)") and Zelma Davis (formerly of C+C Music Factory). This version, which features modern remixes for today's dance clubs, includes a vocal showdown between the two artists that builds to a dramatic conclusion. The album cover is an homage to the original release by Donna Summer and Barbra Streisand.