| Song | Writer | Album | Year |
|---|
| "See You Again" | Underwood, David Hodges, Hillary Lindsey | Blown Away | |
| "She Don't Know" | Underwood, Hillary Lindsey, David Garcia | Denim & Rhinestone | |
| "Silent Night" | Franz Xaver Gruber, Joseph Mohr | My Gift | |
| "Sixteen Going on Seventeen" (Reprise)(with Ariane Rinehart) | Rodgers & Hammerstein | The Sound of Music: Music from the NBC Television Event | |
| "Smoke Break" | Underwood, Hillary Lindsey, Chris DeStefano | Storyteller | |
| "So Long, Farewell" (Reprise) (with Stephen Moyer, Ariane Rinehart, Michael Nigro, Ella Watts-Gorman, Joe West, Sophia Caruso, Grace Rundhaug & Peyton Ell) | Rodgers & Hammerstein | The Sound of Music: Music from the NBC Television Event | |
| "So Small" | Underwood, Luke Laird, Hillary Lindsey | Carnival Ride | |
| "Softly and Tenderly" | Will Lamartine Thompson | My Savoir | |
| "Some Hearts" | Diane Warren | Some Heart
|