| Song Title | Source | Composer(s) |
| Un Riu Negre I Paorós | Poe
| Roig |
| Un Trone C'est Quoi? | Marie la Polonaise
| Gilbert |
| Un Vero Amico | Pinocchio
| Battaglia, Canzian, Facchinetti |
| Un, Dos, Tres, María | 4 Guys Named José
| various |
| Un-do | Dude
| MacDermot |
| Una 60 X 40 X 23 | Anche i bancari hanno un'anima
| Pisano |
| Una Chica Especial | Mamá es una estrella
| Mahler |
| Una Formica è Solo Una Formica | Aggiungi un Posto a Tavola
| Trovaioli |
| Una Historia | Moisés de Egipto
| Machado, Hardiman, Jutras |
| Una Luna in Due | Accendiamo la lampada
| Trovaioli |
| Una Vida Mejor | Una Ventana al Amor
| Murillo |
| Unafraid | Flora, the Red Menace
| Kander |
| Unanswered Questions | Five After Eight
| Bitterman |
| Unbekanntes Mädchen | Linie 1: Das Musical
| Heymann |
| Unbelieveable | Clues to a Life
| Palitz, Wilder |
| Unborn Love, The | Purlie
| Geld |
| Unchained Melody | Blue Jeans
| various |
| Uncle Billy's Travellin' Family Show | Roadside
| Schmidt |
| Uncle Chris | I Remember Mama
| Rodgers |
| Uncle Harry | Oh, Coward!
| Coward |
| Uncle Harry | Pacific 1860
| Coward |
| Uncle Harry | Talent To Amuse, A
| Coward |
| Uncle Huck-a-Buck Song, The | Bring In 'Da Noise, Bring In 'Da Funk
| Duquesnay, Mark, Waters |
| Uncle Remus Said | Song of the South
| Johnston, Wrubel, Wolcott, MacGimsey, Heath, Daniel, Carling |
| Uncle Sam Rag, The | Redhead
| Hague |
| Uncle Sam's Commercial | Walmartopia
| Rohn |
| Uncle Sammy Hit Miami | Bring On the Girls
| McHugh |
| Uncle's Last Request | Lucky Stiff
| Flaherty |
| Uncles and Aunts | Human Comedy, The
| MacDermot |
| Uncrowned Queen of Californi-ay | Lola
| Richardson |
| Und Dabei Lieb' Ich Dich So | Fanfan la Tulipe
| Bürkholz |
| Und Immer Wieder Geht Die Sonne Auf | Hossa
| |
| Und Jetzt Kommst Du | One Life Stand
| Beyer |
| Und Mehr Ist Nicht Zu Sagen | Fanfan la Tulipe
| Bürkholz |
| Und Wenn Ein Neuer Tag Erwacht | Hossa
| |
| Undecided | Night At The Cotton Club, A
| various |
| Undecided | Forever Plaid
| various |
| Under a Spell | Once Upon a Mattress
| Rodgers |
| Under a Tree | Kittiwake Island
| Wilder |
| Under Attack | Mamma Mia!
| Andersson, Ulvaeus |
| Under My Wing | Bingo
| Reid, Heitzman |
| Under Penalties Of Perjury | April 15th Blues
| Yarmolinsky |
| Under Pressure | We Will Rock You
| various |
| Under Separate Cover | Class Act, A
| Kleban |
| Under the Allworthy Road | Tom Jones
| Archer |
| Under the Bamboo Tree | Meet Me in St. Louis
| Martin, Blane |
| Under the Boardwalk | That'll Be the Day
| various |
| Under the Boardwalk | Tribute To The Blues Brothers, A
| various |
| Under The Greenwood Tree | As You Like It
| Page |
| Under the Rainbow | From Where I Stand
| Tapper |