| title | artist | year | album |
| O Death, Where Is Thy Sting? | Bert Williams | 1918 | The Middle Years, 1910-1918 |
| O Death, Where Is Thy Sting? | Bert Williams | 1918 | 1919: "Jazzin' Around and Paintin' the Town" |
| O Dry Those Tears | Arthur Pryor’s Band | 1907 | Echoes from Asbury Park |
| O hur stilla | Folke Andersson | 1927 | Swede Home Chicago |
| O Marenariello | Guido Deiro | ca. 1911 | Complete Recorded Works, Volume 1 |
| O Mary, Don’t You Weep, Don’t You Mourn | Fisk University Jubilee Quartet | 1915 | There Breathes a Hope: The Legacy of John Work II and His Fisk Jubilee Quartet, 1909-1916 |
| O Promise Me | Edward Franklin | ca. 1899-1900 | The 1890s, Vol. 1: "Wipe Him Off the Land" |
| O’Schweizerland | Charles Schoenenberger and Louisa Schneckenbuehl | ca. 1920-1921 | Alpine Dreaming |
| O Sole Mio | Guido Deiro | ca. 1912 | Complete Recorded Works, Volume 1 |
| O Didn’t He Ramble | Dan W. Quinn | 1904 | Centennial |
| O, Didn’t He Ramble | Dan W. Quinn | 1904 | Anthology: The King of Comic Singers, 1894-1917 |
| The Oceana Roll | Eddie Morton | 1911 | Ed. Morton's "Bit of Broadway" |
| The Oceana Roll | Eddie Morton | 1911 | 1911: "Up, Up a Little Bit Higher" |
| Odom Yesoyde Meofor | William Nemrell | ca. 1901-1903 | Attractive Hebrews: The Lambert Yiddish Cylinders, 1901-1905 |
| Oh Gee! Oh Gosh! (My Feet Won’t Behave) | The Benson Orchestra of Chicago | 1920 | The Benson Orchestra of Chicago, 1920-1921 |
| Oh Johnny, Oh Johnny, Oh! | American Quartet | 1917 | 1917: "Yankees to the Ranks" |
| Oh Susanna | Phil Spitalny’s Music | 1931 | The Complete Hit of the Week Recordings, Volume 3 |
| Oh! Frenchy | Arthur Fields | 1918 | 1918: "Like the Sunshine After Rain" |
| Oh! How She Could Yacki Hacki Wicki Wacki Woo (That’s Love in Honolulu) | Arthur Collins and Byron Harlan | 1916 | 1916: "The Country Found Them Ready" |
| Oh! Lawdy | Bert Williams | 1919 | His Final Releases, 1919-1922 |
| Oh! Susie Behave | Irving Kaufman | 1918 | Anthology: The Last Recording Pioneer |
| Oh! What a Pal Was Mary | Henry Burr | 1919 | 1919: "Jazzin' Around and Paintin' the Town" |
| Oh! What a Time for the Girlies When the Boys Come Marching Home | Avon Comedy Four | 1918 | The Great War: An American Musical Fantasy |
| Oh! You La! La! | Wilbur Sweatman’s Original Jazz Band | 1918 | Jazzin' Straight Thru' Paradise |
| Oh! How I Hate to Get Up in the Morning | Arthur Fields | 1918 | Anthology: Singer, Songwriter, Soldier |
| Oh, How I Hate to Get Up in the Morning | Arthur Fields | 1918 | 1918: "Like the Sunshine After Rain" |
| Oh, Those Days | Guido Deiro | 1915 | Complete Recorded Works, Volume 2 |
| Oh, Wouldn’t that Jar You? | Dan W. Quinn | 1900 | Anthology: The King of Comic Singers, 1894-1917 |
| Oh, You Beautiful Doll | American Quartet | 1911 | 1912: "Waitin' on the Levee" |
| Oh, You Coon | Ada Jones and Billy Murray | 1908 | Monarchs of Minstrelsy |
| Oh, You Dream | Eddie Morton | 1910 | The Sound of Vaudeville, Vol. 1 |
| O-H-I-O (O-MY! O!) | Al Jolson | 1920 | 1921: "Make Believe and Smile" |
| Oif’n pripetshok (A Little Fire Burns in the Stove) | Naum Coster | 1918 | Centennial |
| Old Black Joe | Arthur Collins & George S. Williams | 1900 | Before the Big Bang |
| Old Black Joe | Thomas Craig | 1898 | Lost Sounds: Blacks and the Birth of the Recording Industry, 1891-1922 |
| Old Black Joe | Fisk University Jubilee Quartet | 1909 | There Breathes a Hope: The Legacy of John Work II and His Fisk Jubilee Quartet, 1909-1916 |
| Old Black Joe’s Blues | Henderson’s “Club Alabam'” Orchestra | 1923 | Centennial |
| Old Catville Quadrille | Col. John A. Pattee | 1924 | Before the Big Bang |
| Old Dan Tucker | Harry C. Browne | 1916 | Before the Big Bang |
| Old Dan Tucker | Uncle Dave Macon | 1925 | Stomp and Swerve: American Music Gets Hot |
| Old Dog Tray | Carroll Clark | 1910 | Lost Sounds: Blacks and the Birth of the Recording Industry, 1891-1922 |
| Old Folks at Home | August Stengler | 1898 | Masters of the Clarinet, 1892-1920 |
| Old Folks Rag | Van Eps Trio | 1914 | Real Ragtime: Disc Recordings From Its Heyday |
| Old Glory Goes Marching On | Dabney’s Band | 1919 | After Midnight |
| Old Hundred | J. W. Myers | 1896 | Waxing the Gospel: Mass Evangelism and the Phonograph, 1890-1900 |
| Old Joe Clark | Fiddlin’ Powers and Family | 1924 | Before the Big Bang |
| Old King Coal | Anonymous | 1890-95 | Etching the Voice |
| Old Log Cabin | Columbia Minstrels | ca. 1902 | Before Radio: Comedy, Drama & Sound Sketches, 1897-1923 |
| Old Mother Hubbard | Anonymous | 1890-95 | Etching the Voice |
| Old New England Moon | Phil Spitalny’s Music | 1930 | The Complete Hit of the Week Recordings, Volume 1 |
| The Old Oaken Bucket | The Unique Quartette | ca. 1895-1896 | Celebrated, 1895-1896 |
| Old Oaken Bucket–Parody | Nat M. Wills | 1908 | The Famous Tramp Comedian |
| Old Pal, Why Don’t You Answer Me? | Henry Burr | 1920 | 1921: "Make Believe and Smile" |
| Old Time Blues | Edith Wilson and Johnny Dunn’s Original Jazz Hounds | 1921 | "Ain't Gonna Settle Down": The Pioneering Blues of Mary Stafford and Edith Wilson |
| Old Time Minstrel Scene | Tom Lewis | 1924 | Monarchs of Minstrelsy |
| The Old-Time Religion | Haydn Quartet | 1906 | Before the Big Bang |
| The Old Tunes | Fisk University Jubilee Quartet | 1911 | There Breathes a Hope: The Legacy of John Work II and His Fisk Jubilee Quartet, 1909-1916 |
| Old Uncle Ned | Anonymous | 1889-90 | Etching the Voice |
| Old Uncle Ned | William Tuson | ca. 1905 | Masters of the Clarinet, 1892-1920 |
| The Ole Ark / Brethren Rise, Shine | Fisk University Jubilee Quartet | 1911 | There Breathes a Hope: The Legacy of John Work II and His Fisk Jubilee Quartet, 1909-1916 |
| Ole Miss Rag | Handy’s Orchestra of Memphis | 1917 | Centennial |
| On a Beautiful Night with a Beautiful Girl | Heidelberg Quintet | 1912 | Floating Down the River |
| On a Monkey Honeymoon | Collins and Harlan | 1909 | 1910: "Act Two, Scene New" |
| On His First Day Home on Leave | Jack Norworth | 1916 | Together and Alone |
| On Mobile Bay | Albert Campbell and Henry Burr | 1911 | 1911: "Up, Up a Little Bit Higher" |
| On Patrol in No Man’s Land | Lieutenant Noble Sissle | 1919 | The Great War: An American Musical Fantasy |
| On the 5:15 | American Quartet | 1914 | 1915: "They'd Sooner Sleep on Thistles" |
| On the Alamo | Isham Jones Orchestra | 1922 | 1922: "An Angel's Voice I Hear" |
| On the Banks of the Wabash | George J. Gaskin | 1899 | The 1890s, Vol. 2: "Wear Yer Bran' New Gown" |
| On the Banks of the Wabash | Dan W. Quinn | 1899 | Anthology: The King of Comic Singers, 1894-1917 |
| On the Honeymoon Express | Arthur Collins and Byron Harlan | 1913 | Anthology: America's Favorite Entertainers |
| On the Right Road | Bert Williams | 1913 | The Middle Years, 1910-1918 |
| On the Rocky Road to Dublin | Arthur Pryor’s Band | 1906 | 1906: "When Things Was Lookin' Bright" |
| On the Shore at Le-Lei-Wei | Ciro’s Club Coon Orchestra | 1916 | Lost Sounds: Blacks and the Birth of the Recording Industry, 1891-1922 |
| On the Streets of Cairo | Dabney’s Novelty Orchestra | 1919 | After Midnight |
| On the Streets of Cairo | Art Hickman’s Orchestra | 1919 | The San Francisco Sound, Volume 1 |
| One for the ages (featuring “Danny Boy”) | Will Oakland | 1954 | Jubilee |
| One Hour With You | Andy Sannella and His Orchestra | 1932 | The Complete Hit of the Week Recordings, Volume 4 |
| One Kiss | The Benson Orchestra of Chicago | 1921 | The Benson Orchestra of Chicago, 1920-1921 |
| One More Kiss, Then Goodnight | Phil Spitalny’s Music | 1932 | The Complete Hit of the Week Recordings, Volume 4 |
| Only Just Suppose | Guido Deiro | 1922 | Complete Recorded Works, Volume 4 |
| Only Remembered | Prof. John R. Sweney | 1892 | Waxing the Gospel: Mass Evangelism and the Phonograph, 1890-1900 |
| Onward, Christian Soldiers | J. W. Myers | 1896 | Waxing the Gospel: Mass Evangelism and the Phonograph, 1890-1900 |
| Onward, Christian Soldiers | Ira D. Sankey | 1899 | Waxing the Gospel: Mass Evangelism and the Phonograph, 1890-1900 |
| Oogie-Oogie Wa-Wa (I) | McMurray’s California Thumpers | 1922 | The Moaninest Moan of Them All |
| Oogie-Oogie Wa-Wa (II) | McMurray’s California Thumpers | 1922 | The Moaninest Moan of Them All |
| The Opera Reel | Jasper Bisbee | 1923 | Before the Big Bang |
| Orazione e Marcia Militare | Guido Deiro | ca. 1911 | Complete Recorded Works, Volume 1 |
| The Original “Three Tenors” (featuring “Everything Reminds Me of That Old Sweetheart of Mine” by Oakland-Campbell-Burr) | Will Oakland | 1954 | Jubilee |
| Österreichische Kaiserhymne | Anonymous | 1889-90 | Etching the Voice |
| Ostrich Walk | Guido Deiro | 1918 | Complete Recorded Works, Volume 3 |
| Oui, Oui Marie (Wee, Wee, Marie) | Arthur Fields | 1918 | 1919: "Jazzin' Around and Paintin' the Town" |
| Our Boarding House | Nat M. Wills | 1908 | The Famous Tramp Comedian |
| Our Bungalow [unissued] | Nora Bayes and Irving Fisher | 1917 | Together and Alone |
| Our Land of Dreams | Columbia Minstrels (feat. J. W. Myers) | 1903 | At the Minstrel Show |
| Our Sammies’ March | Dabney’s Military Band | 1918 | After Midnight |
| Out in an Automobile | Arthur Collins and Byron Harlan | 1906 | Anthology: America's Favorite Entertainers |
| Out Of Nowhere | Harry Reser’s Radio Band | 1931 | The Complete Hit of the Week Recordings, Volume 2 |
| Out of Order | Russell Hunting | ca. 1895 | Actionable Offenses: Indecent Phonograph Recordings from the 1890s |
| Over There | American Quartet | 1917 | 1917: "Yankees to the Ranks" |
| Over There | Nora Bayes | 1917 | Together and Alone |
| Over There | Nora Bayes | 1917 | 1917: "Yankees to the Ranks" |
| Over There | Enrico Caruso | 1918 | The Great War: An American Musical Fantasy |
| Over There | Enrico Caruso | 1918 | 1918: "Like the Sunshine After Rain" |
| Over There | Arthur Fields | 1917 | Anthology: Singer, Songwriter, Soldier |
| Over There | Peerless Quartet | 1917 | 1917: "Yankees to the Ranks" |
| Overnight | Hit of the Week Orchestra | 1931 | The Complete Hit of the Week Recordings, Volume 2 |
| Overture from I Capuleti ei Montecchi | Guido Deiro | ca. 1928 | Complete Recorded Works, Volume 4 |