|
| Uncommon Christmas Carols | John Cozens | Schmitt, Hall & McCreary Company | Minneapolis | 1941 | | Christmas | 34 | |
| Under the Christmas Star | R. Bronner; H. W. Petrie; Lorenz Pub. Co. | Lorenz Pub. Co. | New York, N.Y. | 1914 | | | 6 | |
| Unfading Treasures: a compilation of sacred songs and hymns, adapted for use by Sunday schools, Epworth Leagues, endeavor societies, pastors, evangelists, choristers, etc. | W. J. Kirkpatrick; T.C. O'Kane; Jno. R. Sweney; John J. Hood; Cranston & Curtis | John J. Hood, Cranston & Curtis | Philadelphia; Cincinnati | 1893 | | Has Music | 267 |  |
| Union Hymnal | Central Conference of American Rabbis | Central Conference of American Rabbis | | 1897 | Jewish hymnals | | 126 | |
| Union Hymnal and music | H. B. Gower | H. B. Gower | Philadelphia, Penn. | 1858 | | | 27 | |
| Union Hymnal for Jewish Worship | Central Conference of American Rabbis | Central Conference of American Rabbis | | 1914 | Jewish hymnals | | 215 | |
| Union Hymnal, Songs and Prayers for Jewish Worship. 3rd ed. Revised and enlarged. | Central Conference of American Rabbis | Central Conference of American Rabbis | | 1948 | Jewish hymnals | | 271 | |
| Union Hymns: adapted to Social Meetings and Family Worship Selected from Church Psalmody, with Additional Hymns | Rufus Babcock; Perkins, Marvin, & Co. | Perkins, Marvin, & Co. | Boston, Mass. | 1834 | | | 477 | |
| Union Hymns. Rev. | American Sunday School Union; American Sunday School Union | American Sunday School Union | Philadelphia, Penn. | 1845 | | | 523 | |
| Union Hymns. Rev. | American Sunday School Union; American Sunday School Union | American Sunday School Union | Philadelphia, Penn. | 1835 | | | 507 | |
| Union Prayer Meeting Hymns | A. Taylor; American Sunday School Union | American Sunday School Union | Philadelphia, Penn. | 1858 | | | 254 | |
| Union Prayer Meeting Hymns | The American Sunday School Union | The American Sunday School Union | Boston, Mass. | 1859 | Young Men's Christian Association | | 257 | |
| Union Songster : Songs and Prayers for Jewish Youth (שִׁיר וּתְפִכָּה) | | The Central Conference of American Rabbis | New York | 1960 | Judaism | | 188 | |
| Unison Anthems for Young Voices | E. M. A. Fuller; Pro Art Publications | Pro Art Publications | Westbury | 1956 | | | 15 | |
| Unison Choral Collection | J. Valerio; Raphael & Jean Valerio | Raphael & Jean Valerio | Huntington, N.Y. | 1958 | | | 10 | |
| Unitarian Service Book, and Hymns for Church and Home. Abridged ed. | American Unitarian Association | American Unitarian Association | Boston, Mass. | 1904 | Unitarian churches | | 500 | |
| United in Faith and Song: Hymns and Songs in Vietnamese and English | | Oregon Catholic Press | Portland, OR | 2001 | | | 0 | |
| United Praise: for use in Sunday Schools, Young People's Societies and other Church Services | E. S. Lorenz; Ira B. Wilson; Lorenz & Co. | Lorenz & Co. | New York | 1908 | | Has Music | 252 | |
| Unity Hymns and Chorals. Rev and enl. with Service Elements | Unity Pub. Co. | Unity Pub. Co. | Chicago, Ill. | 1913 | Unitarian churches | | 332 | |
| Unity Services and Songs | Western Unitarian Sunday School Society | Western Unitarian Sunday School Society | Chicago | 1894 | Unitarian churches | Has Music | 161 | |
| Universal Hymns | Hugo Frey; Robbins Music Corp. | Robbins Music Corp. | New York, N.Y. | 1946 | | | 97 | |
| Universal Hymns Compiled for the North End Union | J. W. Frothingham; Thomas Todd | Thomas Todd | Boston, Mass. | 1894 | Unitarian churches | | 202 | |
| Universal Songs and Hymns, a complete hymnal | A. E. Brumley; W. O. Cooper; R. S. Arnold; Albert E. Brumley & Sons | Albert E. Brumley & Sons | Powell, Mo. | 1949 | | | 248 | |
| Universalist Hymn Book | George Rogers; R. P. Brooks | R. P. Brooks | Cincinnati, Oh. | 1843 | Universalist Church of America | | 650 | |
| University Hymn Book for use in the Chapel of Harvard University | Harvard Univ. Press | Harvard Univ. Press | Cambridge, Mass. | 1895 | | | 277 | |
| University Hymns | Harry B. Jepson; Charles R. Brown; Yale Univ. Press | Yale Univ. Press | New Haven, Conn. | 1924 | | | 216 | |
| University Hymns: with tunes arranged for men's voices | Professor Horatio Parker, Mus. D. Cantab.; Professor Harry B. Jepson, Mus. B.; A. S. Barnes & Co. | A. S. Barnes & Co. | New York | 1907 | | Has Music | 414 | |
| Unparteiische Liedersammlung zum Gebrauch beim Oeffentlichen Gottesdienst ... Revidierte und vermehrte vierte Auflage | S. D. Guengerich; L. A. Miller | L. A. Miller | Arthur, Ill. | 1940 | Old Order Amish Mennonite Church | | 15 | |
| Unparteiische Liedersammlung zum Gebrauch beim oeffentlichen Gottesdienst und zur häuslichen Erbauung. (Revidirt und vermehrt) | S. D. Guengerich; Mennonitischen Verlagsanstalt | Mennonitischen Verlagsanstalt | Elkhart, Ind. | 1892 | Old Order Amish Mennonite Church | | 300 | |
| Unparteiische Liedersammlung zum Gebrauch deim Oeffentliche Gottesdienst und zur Häuslichen Erbauung (Revidirt und vehmehrt) | S. D. Guengerich; Mennonitschn Verlagsanstalt | Mennonitischen Verlagsanstalt | Elkhart, Ind. | 1907 | Old Order Amish Mennonite Church | | 309 | |
| Unpartheyisches Gesang-Buch: enhaltend Geistrieche Lieder und Psalmen, zum allgemeinen Gebrauch des wahren Gottesdienstes (3rd aufl.) | Johann Bär | Johann Bär | Lancaster, Penn. | 1820 | Mennonite Church, Lancaster Conference | Has Music | 519 | |
| Unpartheyisches Gesang-Buch: enhaltend Geistrieche Lieder und Psalmen, zum allgemeinen Gebrauch des wahren Gottesdienstes (4th verb. Aufl., mit einem Anhang) | Johann Bär | Johann Bär | Lancaster, Penn. | 1829 | Mennonite Church, Lancaster Conference | Has Music | 533 | |
| Unser Liederbuch, die schoensten Lieder fuer Schule, Sonntagsschule und Familie | E. Linder; Pilger Buchhandlung | Pilger Buchhandlung | Reading, Penn. | 1893 | Lutheran hymnals (general) | | 441 | |
| Unser Liederhort. I Teil. Sammlung auserlesener Lieder ... | H. F. Schmidt | H. F. Schmidt | Dixon, Ill. | 1903 | | | 338 | |
| Unter den Blumen fin Kindertag-program fuer die Sonntagschule | G. F. Rosche; George F. Rosche & Co. | George F. Rosche & Co. | Chicago, Ill. | 1899 | | | 7 | |
| Uplifted Voices: a 20th century hymn book for sunday-schools and devotional meetings | Adam Geibel; Adam Geibel Music Co.; R. Frank Lehman | Adam Geibel Music Co. | Philadelphia | 1901 | | Has Music | 222 | |
| Uplifting Songs, New and Old | C. C. Case; J. R. Murray; John Church | John Church | Cincinnati, Oh. | 1896 | | | 218 | |
| Upper Room Hymns | Harry Denman; Grover C. Emmons; Abingdon Cokesbury Press | Abingdon Cokesbury Press | New York, N.Y. ; Nashville, Tenn. | 1942 | | | 140 | |
