In a word ... Only one all-time No. 1 Hot 100 song title is shorter than "Up": Britney Spears' "3," from 2009. "Up" is the shortest proper one-word No. 1 title and ties two other hits for the fewest letters in a leading song: Rihanna's "S&M," featuring Spears, and Katy Perry's "E.T.," featuring Kanye West, both from 2011.
Here's a recap of the briefest No. 1 Hot 100 song titles (those encompassing three or fewer letters):
"3," Britney Spears, 2009
"Up," Cardi B, 2021
"S&M," Rihanna feat. Britney Spears, 2011
"E.T.," Katy Perry feat. Kanye West, 2011
"WAP," Cardi B, 2020
"Sad!," XXXTENTACION, 2018
"OMG," Usher feat.
will.i.am, 2010
"Low," Flo Rida, 2008
"SOS," Rihanna, 2006
"Bad," Michael Jackson, 1987
"Ben," Michael Jackson, 1972
"War," Edwin Starr, 1970
"ABC," Jackson 5, 1970
"Why," Frankie Avalon, 1959
