Diskografi IU
Lagu lainnya yang masuk tangga lagu

| Judul | Tahun | Posisi tangga lagu puncak> KORGaon  | Posisi tangga lagu puncak> KORHot  | Penjualan (digital) | Album |
| --- | --- | --- | --- | --- | --- |
| "Taking a Train" | 2009 | — | — | — | IU...IM |
| "Rain Drop" (cover Wheesung) | 2010 | 74 | — |  KOR: 9.000 | Nagging (singel) |
| "Merry Christmas in Advance" (dengan Thunder) | 2010 | 7 | 17 |  KOR: 884.403 | Real |
| "This Is Not What I Thought" | 2010 | 9 | — | — | Real |
| "The Night of the First Breakup" | 2010 | 20 | — | — | Real |
| "The Thing I Do Slowly" | 2010 | 21 | — | — | Real |
| "Alone in the Room" | 2010 | 27 | — | — | Real |
| "Good Day (Instrumental)" | 2010 | 193 | — | — | Real |
| "I Know" (Seungri dengan IU) | 2011 | 42 | — | — | V.V.I.P |
| "Cruel Fairytale" | 2011 | 8 | — |  KOR: 1,051,000 | Real+ |
| "Secret" | 2011 | 2 | 5 |  KOR: 2.046.000 | Last Fantasy |
| "Sleeping Prince of the Woods" (dengan Yoon Sang; cover Halo) | 2011 | 3 | 9 |  KOR: 1.245.000 | Last Fantasy |
| "Uncle" (dengan Lee Juck) | 2011 | 4 | 8 |  KOR: 1.755.000 | Last Fantasy |
| "A Child Searching for Stars" (dengan Kim Kwang-jin) | 2011 | 6 | 12 |  KOR: 1.078.000 | Last Fantasy |
| "Wallpaper Patterns" | 2011 | 7 | 15 |  KOR: 953.000 | Last Fantasy |
| "Wisdom Tooth" | 2011 | 8 | 19 |  KOR: 953.000 | Last Fantasy |
| "Teacher" (dengan Ra.D) | 2011 | 9 | 25 |  KOR: 844.000+ | Last Fantasy |
| "Everything's Alright" (dengan Kim Hyeon-cheol) | 2011 | 11 | 24 |  KOR: 847.000 | Last Fantasy |
| "Last Fantasy" | 2011 | 12 | 27 |  KOR: 779.000 | Last Fantasy |
| "4AM" | 2011 | 13 | 32 |  KOR: 728.000 | Last Fantasy |
| "A Stray Puppy" | 2011 | 17 | 40 |  KOR: 665.000 | Last Fantasy |
| "L'amant" | 2011 | 19 | 49 |  KOR: 576.000 | Last Fantasy |
| "I Really Don't Like Her" | 2012 | 15 | 12 |  KOR: 700.000 | Spring of a Twenty Year Old |
| "Like You" (Wanted dengan IU) | 2012 | 9 | 14 |  KOR: 945.000 | Vintage |
| "Everybody Has Secrets" (dengan Gain dari Brown Eyed Girls) | 2013 | 2 | 3 |  KOR: 573.000 | Modern Times |
| "Love of B" | 2013 | 3 | 7 |  KOR: 413.000 | Modern Times |
| "Between the Lips (50 cm)" | 2013 | 4 | 5 |  KOR: 419.000 | Modern Times |
| "A Gloomy Clock" (dengan Jonghyun dari Shinee) | 2013 | 6 | 11 |  KOR: 387.000 | Modern Times |
| "Modern Times" | 2013 | 7 | 10 |  KOR: 405.000 | Modern Times |
| "Bad Day" | 2013 | 8 | 14 |  KOR: 342.000 | Modern Times |
| "Obliviate" | 2013 | 11 | 23 |  KOR: 278.000 | Modern Times |
| "Daydream" (dengan Yang Hee-eun) | 2013 | 12 | 15 |  KOR: 267,000 | Modern Times |
| "Havana" | 2013 | 13 | 29 |  KOR: 220.000 | Modern Times |
| "Walk with Me, Girl" (dengan Choi Baek-ho) | 2013 | 14 | 26 |  KOR: 211.000 | Modern Times |
| "Wait" | 2013 | 17 | 41 |  KOR: 189.000 | Modern Times |
| "Voice Mail (versi Korea)" | 2013 | 18 | 28 |  KOR: 188.000 | Modern Times |
| "Pastel Crayon" (dari Bel Ami) | 2013 | 39 | 27 |  KOR: 98.000 | Modern Times – Epilogue |
| "The Meaning of You" (dengan Kim Chang-wan; cover Sanulrim) | 2014 | 3 | 3 |  KOR: 2.440.000 | A Flower Bookmark |
| "When Love Passes By" (cover Lee Moon-se) | 2014 | 4 | 3 |  KOR: 782.000 | A Flower Bookmark |
| "Pierrot Smiles at Us" (cover Kim Wan-sun) | 2014 | 8 | 10 |  KOR: 499.054 | A Flower Bookmark |
| "Dreams in Summer Night" (cover Kim Hyun-sik) | 2014 | 12 | 12 |  KOR: 465.318 | A Flower Bookmark |
| "Flower" (cover Kim Kwang-seok) | 2014 | 14 | 13 |  KOR: 285.000 | A Flower Bookmark |
| "Boom Ladi Dadi" (dengan Clon; cover Clon) | 2014 | 16 | 14 |  KOR: 252.000 | A Flower Bookmark |
| "Sing for Me" (god dengan IU) | 2014 | 9 | — |  KOR: 299.000* | Chapter 8 |
| "The Shower" | 2015 | 2 | — |  KOR: 1.001.000 | Chat-Shire |
| "Shoes" | 2015 | 5 | — |  KOR: 470.788 | Chat-Shire |
| "Knees" | 2015 | 5 | — |  KOR: 675.430 | Chat-Shire |
| "Zezé" | 2015 | 8 | — |  KOR: 778.823 | Chat-Shire |
| "Red Queen" (dengan Zion.T) | 2015 | 10 | — |  KOR: 427.439 | Chat-Shire |
| "Glasses" | 2015 | 13 | — |  KOR: 362.363 | Chat-Shire |
| "Ending Scene" | 2017 | 3 | — |  KOR: 766.561 | Palette |
| "Dlwlrma" | 2017 | 5 | — |  KOR: 832.119 | Palette |
| "Jam Jam" | 2017 | 7 | — |  KOR: 461.247 | Palette |
| "Dear Name" | 2017 | 9 | — |  KOR: 431.845 | Palette |
| "Black Out" | 2017 | 14 | — |  KOR: 283.532 | Palette |
| "Full-Stop" | 2017 | 16 | — |  KOR: 246.926 | Palette |
| "Love Alone" | 2017 | 19 | — |  KOR: 201.511 | Palette |
| "Secret Garden" | 2017 | 10 | — |  KOR: 421.344 | A Flower Bookmark 2 |
| "Every Day with You" | 2017 | 12 | — |  KOR: 325.396 | A Flower Bookmark 2 |
| "Last Night Story" | 2017 | 15 | — |  KOR: 301.981 | A Flower Bookmark 2 |
| "By the Stream" | 2017 | 19 | — |  KOR: 178.956 | A Flower Bookmark 2 |
"—" menandakan perilisan yang tak masuk tangga lagu atau tak dirilis di wilayah tersebut. Catatan: Billboard Korea K-Pop Hot 100 diperkenalkan pada Agustus 2011 dan tak dilanjutkan pada Juli 2014.