| 1892 | Kullervo, op. 7 · chorus | Confirmed | 75' |
| 1893 | Karelia Overture, op. 10 | Confirmed | 8' |
| 1893 | Karelia Suite, op. 11 | Confirmed | 15' |
| 1894 | Spring Song, op. 16 | Confirmed | 8' |
| 1895 | The Swan of Tuonela, op. 22 no. 2 | Confirmed | 9' |
| 1896 | Lemminkäinen Suite, op. 22 (Four Legends) | TBD | 50' |
| 1898 | King Christian II, Suite, op. 27 | Confirmed | 24' |
| 1899 | Symphony No. 1 in E minor, op. 39 | Confirmed | 38' |
| 1900 | Finlandia, op. 26 | Confirmed | 9' |
| 1900 | Snöfrid, op. 29 · chorus | TBD | 12' |
| 1902 | En Saga, op. 9 | Confirmed | 18' |
| 1902 | Symphony No. 2 in D major, op. 43 | Confirmed | 43' |
| 1904 | Cassazione, op. 6 | TBD | 9' |
| 1904 | Romance in C major for Strings, op. 42 | Confirmed | 6' |
| 1904 | Valse triste, op. 44 no. 1 | Confirmed | 5' |
| 1905 | Pelléas et Mélisande, Suite, op. 46 | Confirmed | 25' |
| 1905 | Violin Concerto in D minor, op. 47 | Confirmed | 32' |
| 1906 | Pohjola's Daughter, op. 49 | TBD | 14' |
| 1907 | Belshazzar's Feast, Suite, op. 51 | Confirmed | 15' |
| 1907 | Symphony No. 3 in C major, op. 52 | Confirmed | 29' |
| 1908 | Night Ride and Sunrise, op. 55 | TBD | 15' |
| 1910 | In Memoriam, op. 59 | Confirmed | 10' |
| 1911 | Scènes historiques, Suite No. 1, op. 25 | Confirmed | 18' |
| 1911 | Symphony No. 4 in A minor, op. 63 | Confirmed | 36' |
| 1912 | Rakastava (The Lover), op. 14 | Confirmed | 14' |
| 1912 | Scènes historiques, Suite No. 2, op. 66 | Confirmed | 16' |
| 1913 | Luonnotar, op. 70 | Confirmed | 9' |
| 1913 | The Bard, op. 64 | Confirmed | 8' |
| 1914 | The Oceanides, op. 73 | Confirmed | 11' |
| 1919 | Symphony No. 5 in E-flat major, op. 82 | Confirmed | 32' |
| 1921 | Suite champêtre, op. 98b | Confirmed | 8' |
| 1921 | Suite mignonne, op. 98a | Confirmed | 8' |
| 1922 | Andante festivo | Confirmed | 5' |
| 1923 | Symphony No. 6 in D minor, op. 104 | Confirmed | 29' |
| 1924 | Symphony No. 7 in C major, op. 105 | Confirmed | 22' |
| 1926 | Tapiola, op. 112 | TBD | 18' |
| 1927 | The Tempest, Suite No. 1, op. 109 | Confirmed | 18' |
| 1927 | The Tempest, Suite No. 2, op. 109 | Confirmed | 16' |
| — | Dryadi (Tone Picture for Orchestra), op. 45/1 (Die Dryade) | TBD | — |
| — | Humoresque No. 5, op. 89/3 | Confirmed | — |
| — | Laetare Anima Mea, op. 77a | TBD | — |
| — | March of the Finnish Infantry, op. 91a | TBD | — |
| — | Pan and Echo (Dance Intermezzo), op. 53 | TBD | — |
| — | Scaramouche (Tragic Pantomime), op. 71 | TBD | — |
| — | Serenata No. 1, op. 69a | TBD | — |
| — | Serenata No. 2, op. 69b | TBD | — |
| — | Six Songs, op. 90; No. 1: Norden (From The North) | TBD | — |
| — | Svanevit Suite, op. 54 | TBD | — |
| — | Valse Chevaleresque, op. 96c | TBD | — |
| — | Valse lyrique, op. 96a | TBD | — |