"100 Years" is a song by American singer Five for Fighting. It was released on November 17, 2003, as the first single from his third studio album, The Battle for Everything (2004). The single reached number one on the US Billboard Adult Contemporary chart and number 28 on the Billboard Hot 100. In 2007, the song earned a Platinum certification from the Recording Industry Association of America for more than 1,000,000 copies sold. It also charted in Australia and New Zealand, peaking at number 32 in both countries.

Vladimir John Ondrasik III, also known by his stage name Five for Fighting, is an American singer-songwriter and pianist. He is best known for his piano-based soft rock, such as the top 40 hits "Superman " (2001), "100 Years" (2003), and "The Riddle" (2006). He also had a string of moderate hits on the adult contemporary charts in the late 2000s and into the 2010s, including "World" (2006) and "Chances" (2009).