Alone Again (Naturally)
Album:The Berry Vest of Gilbert O'Sullivan
Length:3:35 (original version)
1:55 (Ice Age 3 version)
Previous song:Nothing Rhymes
Next song:Clair

"Alone Again (Naturally)" is a song by Irish singer–songwriter Gilbert O'Sullivan. It was released in 1972, and in total spent six weeks, non-consecutively, at #1 on the United States Billboard Hot 100 singles chart. In Casey Kasem's American 'Top 40 of the 1970s', "Alone Again (Naturally)" was #5 (Debby Boone's "You Light Up My Life" was #1). The track reached #3 in the UK Singles Chart.

The song plays in Ice Age: Dawn of the Dinosaurs near the end of the movie (around 1:14:52), the scene shows various segments of Scrat and Scratte together seen "from the point of view of the acorn".

The song also is heard twice during the bluesky studios movie Rio.