"Biggest Part of Me" is a song by American band Ambrosia, from the album One Eighty.

Released as a single in 1980, the song reached number one on the Radio & Records chart[3] and number 3 on both the US Billboard Hot 100[4] and Adult Contemporary charts.

The song was written by band member David Pack.

Pack re-recorded the song for his 2005 album, The Secret of Movin' On.

‡ Sales+streaming figures based on certification alone.