"Goodbye's (The Saddest Word)" is a song recorded by Canadian recording artist Celine Dion for her sixth English-language album A New Day Has Come (2002). The song was written and produced by Robert John "Mutt" Lange, while Lange and his then-wife, country singer Shania Twain did the backing vocals. Lyrically, the song speaks about motherly love and fear of losing one's mother. It was released as the album's third and last commercial single on 18 November 2002.

The song received favorable reviews from music critics, who called it a "heartfelt and emotional song", while praising Dion's performance. The "Goodbye's (The Saddest Word)" music video was directed by Chris Applebaum between 12–13 October 2002 in Paris, France, and premiered in November 2002. The song performed moderately on the charts, peaking inside the top fifty in the countries that it charted, but it did not matched the success of the previous singles.

"Goodbye's (The Saddest Word)" was written and produced by Robert John "Mutt" Lange, who already worked with Dion in 1999 on "If Walls Could Talk." Lange and his then-wife, country singer Shania Twain did the backing vocals. The song runs to 5 minutes 19 seconds with a radio edit of 4 minutes 23 seconds. It was recorded at Studio Piccolo and released 18 November 2002.

Lyrically, the devastatingly emotional ballad speaks about the absolute love between a child and her mother. "There is no other love like a mother's love for her child," she sings. Céline first heard the Robert John "Mutt" Lange song three years ago [1999] and turn it down. "Now, being a mother, I found the strength to sing it, but it was hard," she said. Its lesson? "Never wait too long to tell someone how you feel," she answered.

In October 2008, "Goodbye's (The Saddest Word)" was included on the European version of My Love: Ultimate Essential Collection greatest hits.

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