One Thing or The One Thing may refer to:

Albums The One Thing (album), a 1993 album by Michael Bolton One Thing, a 1989 album by Sylvia Juncosa

Songs "One Thing" (Alicia Keys song), 2012 "One Thing" (Finger Eleven song), 2003 "One Thing" (Gravity Kills song), 2002 "One Thing" (One Direction song), 2012 "1 Thing", a 2005 song by Amerie "The One Thing" (INXS song), 1982 "The One Thing" (Shakira song), 2014 "One Thing", a song by Beach House from their 2015 album Thank Your Lucky Stars "One Thing", a song by Soulsavers from their 2015 album Angels & Ghosts "One Thing", a song by Hellyeah from their 2007 album Hellyeah "One Thing", a song by Nothingface from their 1997 album Pacifier "One Thing", a song by Lola Young from her 2025 album I'm Only F**king Myself "1 Thing", a song by STAYC from their 2024 album Metamorphic

Other uses The One Thing (book), 2013 non-fiction self-help book

See also One More Thing (disambiguation) Just One Thing, BBC radio show Thing 1, a fictional character from Dr. Seuss' The Cat In The Hat