Islossningen i Uleå älv (The Breaking of the Ice on the River Oulu), Op. 30, is a composition by Jean Sibelius, an "improvisation for narrator, men's chorus and orchestra". Sibelius composed it in 1899 on a poem by Zachris Topelius, a Swedish-language Finnish poet, who had dedicated it to Tsar Alexander II of Russia, thus escaping censorship. The piece was an "explicit protest composition" against a Russia restricting the autonomy of the Grand Duchy of Finland. Sibelius wrote it for a lottery of the Savonian-Karelian Students' Association, where he conducted the first performance on 21 October 1899.