Danh sách đĩa nhạc của IU
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↑  Prior to the establishment of the Gaon Music Chart in 2010, South Korea's music charts were supplied by the Music Industry Association of Korea (MIAK), which stopped compiling data in 2008. There are no known cumulative chart records for digital singles prior to 2010.
↑  Sales figures for Growing Up are only available since January 2010. South Korean sales figure as of April 2012.
↑  Sales figures for Last Fantasy as of October 2015. Also, sales for both standard and limited editions are combined.
↑  Sales figures as of October 2015. Also, sales for both Modern Times and Modern Times – Epilogue are combined.
↑  Japan sales figures for Modern Times as of January 2014.
↑  Sales figures for Palette as of May 2020.
1 2 3 4  Japan sales figures for IU's discography as of October 2019.
↑  United States sales figures for Palette as of May 2017.
↑  Sales figures for Lost and Found are only available since January 2010. South Korean sales figure as of January 2012.
↑  Sales figures for IU...IM  are only available since January 2010. South Korean sales figure as of February 2012.
↑  Sales figures for Real as of May 2012. Also, sales for both standard and special limited editions are combined.
↑  Sales figures for A Flower Bookmark as of November 2017. Also, sales for both CD and LP editions are combined.
↑  Sales figures for Chat-Shire as of January 2020.
↑  Sales figures for A Flower Bookmark 2 as December 2017.
↑  Korean sale is a digital sales only by Gaon Music Chart and Japanese sale is a CD single sales by Oricon
↑  The Korea K-Pop Hot 100 chart launched in 2011 and was discontinued in 2014.
↑  Sales figures for "Lost Child" since 2012 only.
↑  The song was recorded two years before Zico debuted as the leader of Block B.
↑  Sales figures for "Nagging" as of ngày 25 tháng 2 năm 2012.
↑  Sales figures for "Good Day" as of 2014.
↑  Real+, physical single edition was entered Gaon Album chart, peak as no.2.
↑  Sales figures for "Only I Didn't Know" as of ngày 28 tháng 12 năm 2013.
↑  Sales figures for Real+ as of 2011.
↑  Sales figures for "You and I" as of 2015.
1 2 3 4  That was the Japanese version or original Japanese single.
↑  Spring of a Twenty Year Old, physical single edition was entered Gaon Album chart, peak as no.3.
↑  Sales figures for Spring of a Twenty Year Old as of August 2013.
↑  Sales figures for "The Red Shoes" as of 2014.
↑  Sales figures for "Friday".
↑  Sales figures for "Twenty-Three" as of December of 2016.
↑  Sales figures for "Through the Night"
↑  Sales figures for "Can't Love You Anymore"
↑  Sales figures for "Palette"
↑  Sales figures for "Autumn Morning"
↑  Sales figures for "Sleepless Rainy Night" as of December of 2017.
↑  Sales figures for "It's You" as of September 2011.
↑  Sales figures for "Not Spring, Love, or Cherry Blossoms" as of April 2017.
↑  Sales figures for "When Would It Be" as of ngày 14 tháng 3 năm 2015.
↑  Sales figures for "Love Story"
↑  Korean sale is a digital sales only by Gaon Music Chart and Japanese sale is a CD single sales by Oricon
↑  The song was later included as a CD-only special track in a special edition of the soundtrack album for the series. It was also included as a CD-only bonus track in IU's EP Chat-Shire.
↑  Sales figures for "Merry Christmas in Advance" since 2011 only.
↑  Sales figures for "Secret" and "Uncle" as 2012.
↑  Sales figures for "Sleeping Prince of the Woods" as of January 2012.
↑  Sales figures for "A Child Searching for Stars" as of January 2012.
↑  Sales figures for "Wallpaper Patterns", "Wisdom Tooth", "Teacher" and "Everything's Alright" as of January 2012.
↑  Sales figures for "Last Fantasy" as of January 2012.
↑  Sales figures for "4AM", "A Stray Puppy" and "L'amant" as of January 2012.
↑  Sales figures for "I Really Don't Like Her" as of 2012.
↑  Sales figures for "Everybody Has Secrets" as of 2013.
↑  Sales figures and references for "Love of B", "Between the Lips (50cm)", "A Gloomy Clock", "Modern Times" & "Bad Day".
↑  Sales figures for "Obliviate" and "Daydream".
↑  Sales figures for "Pastel Crayon" as of January 2014.
↑  Sales figures for "The Meaning of You" as of ngày 10 tháng 10 năm 2015.
↑  Sales figures for "Pierrot Smiles at Us" and "Dreams in Summer Night" as of end of 2014.
↑  Sales figures for "Flower" and "Boom Ladi Dadi" as of ngày 7 tháng 6 năm 2014.
↑  This is an altered version of the singer's 2010 song "Merry Christmas in Advance" with different lyrics.