The Best Day (Taylor Swift song)

"The Best Day" is a song written and recorded by the American singer-songwriter Taylor Swift for her second studio album, Fearless (2008). Produced by Swift and Nathan Chapman, "The Best Day" is an understated song rooted in country rock, with lyrics dedicated to Swift's parents, most of the verses being to her mother. A music video containing home footage edited by Swift was released on May 1, 2009, as part of a special Mother's Day promotion through Big Machine Records.

Music critics praised "The Best Day" for its understated production and tender sentiments. The song peaked at number three on the Bubbling Under Hot 100 Singles chart, and 56 on Billboard's Hot Country Songs chart. The Recording Industry Association of America (RIAA) in July 2018 certified the track gold, denoting 500,000 units based on sales and stream.

Swift released a re-recorded version, "The Best Day (Taylor's Version)", as part of her re-recorded album Fearless (Taylor's Version), on April 9, 2021. A new music video for "The Best Day (Taylor's Version)", was uploaded onto YouTube on the album's release date. The re-recorded version also charted on the US Bubbling Under Hot 100 and Hot Country Songs charts, and won Best Family Feature at the 2021 CMT Music Awards.