The April Uprising (Bulgarian: Априлско въстание, Aprilsko vǎstanie), called the Bulgarian Horrors or Bulgarian atrocities in Britain, was an insurrection organised by the Bulgarians in the Ottoman Empire from April to May 1876, which was brutally suppressed. It indirectly resulted in the re-establishment of Bulgaria in 1878. The regular Ottoman Army and irregular bashi-bazouk units brutally suppressed the rebels, resulting in a public outcry in Europe, with many famous intellectuals condemning the atrocities by the Ottomans and supporting the oppressed Bulgarian population.
The 1876 uprising involved only those parts of the Ottoman territories populated predominantly by Bulgarians. The emergence of Bulgarian national sentiments was closely related to the re-establishment of the independent Bulgarian Orthodox Church in 1870.