| Unbreakable Heart | |
| Written by | Benmont Tench |
| Jessica Andrews | 1999 | Heart Shaped World |
| Carlene Carter | 1993 | Little Love Letters |
| Unchained Melody | |
| Written by | Alex North and Hy Zaret |
| Ronnie McDowell | 1991 | |
| Elvis Presley | 1978 | |
| The Righteous Brothers |
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| LeAnn Rimes | 1997 | Unchained Melody: The Early Years |
| Joe Stampley | 1975 |
| Uncle Pen | |
| Written by | Bill Monroe |
| Ricky Skaggs | 1983 | Don't Cheat In Our Hometown |
| Porter Wagoner |
1956 | |
| Hank Williams, Jr. | 1977 | The New South |
| Undeniable | |
| Written by | Deborah Allen and Rafe VanHoy |
| Deborah Allen | 1993 | Delta Dreamland |
| LeAnn Rimes | 1998 | Sittin' On Top Of The World |
| Under These Conditions | |
| Written by | Ronnie McDowell, Joe Meador and Troy Seals |
| Ronnie McDowell | 1989 | American Music |
| George Strait | 1988 | If You Ain't Lovin' You Ain't Livin' |
| Uneasy Rider | |
| Written by | Charlie Daniels |
| BR549 | 2000 | Coast To Coast |
| Charlie Daniels | 1973 | Super Hits |
| The Unforgiven | |
| Written by | Hal Ketchum |
| Hal Ketchum | 1998 | I Saw The Light |
| Hal Ketchum | 1999 | Awaiting Redemption |
| Unmitigated Gall | |
| Written by | Mel Tillis |
| Dawn Sears (featuring Connie Smith) | 2002 | Dwan Sears |
| Pam Tillis | 2002 | It's All Relative - Tillis Sings Tillis |
| Faron Young | 1966 |